Online Math Games & Activities
Below is a collection of links I've been acquiring for a good while, sorted by the specific math topic the games or activities are in. I tested all of these sites before including them, so they should work. If any link is down, please let me know.
Games suitable for two players or more are marked with this icon: The icon comes from this page and is under a Creative Commons Attribution 3.0 License.
Activities that offer a worksheet to go along with them are marked with this icon: The icon comes from the Tango Desktop Project and is public domain. 

Note that this page is best viewed with Firefox. Internet Explorer does not follow the rules properly and may display things oddly. 
Adding 3Digit Numbers 
Add 3digit numbers stepbystep on the side of the train cars. If you're stuck, the computer will walk you through what you need to do. 
Addition Game  Fishing 
As you fish with an addition problem pole, try to catch the fish that match your pole. 
Addition of 3Digit Numbers 
Add 3digit numbers by regrouping as needed. The regrouping is shown visually to help you understand how it works. You must type in your own problems. 
Addition Practice Game 
Do basic addition problems to win stars. There is no time limit. You can control settings such as the minimum and maximum value of either number, the number of problems, and the number of decimals (though that particular feature does not seem to workthey remain whole numbers only). 
Code 13 
In this variation on Mahjongg, make matches of robots that have numbers that add to 13. 
Count Addition Game 
Count the objects to practice addition and win stars for each correct answer. There is no time limit. You can control settings such as the minimum and maximum value of either number, the object to count (there's a lot of options!), the number of problems, and the input method for answering. 
House Coloring Addition Game 
Solve addition problems to figure out what color to put on each part of a house. 
Mad Minute Math  Addition 
See how many basic addition problems you can do in a minute. 
Math Mayhem  Addition 
Compete against other players by using your addition skills as fast as you can. 
The Counting Game 
Choose the number to count by, then count as fast as you can by finding the next number from the numbers on the panel. You can earn more points by choosing higher numbers to count by. A timer counts down, so you'll need to hurry! 
Turkey Coloring Addition Game 
Solve addition problems to figure out what color to put on each part of a turkey. 
Umbrella Coloring Addition Game 
Solve addition problems to figure out what color to put on each part of an umbrella. 

Addition & Subtraction Practice Game 
Do basic addition and subtraction problems (they're mixed together!) to win stars. There is no time limit. You can control settings such as the minimum and maximum value of either number, the number of problems, and the number of decimals (though that particular feature does not seem to workthey remain whole numbers only). 
Addition & Subtraction Matching Games 
Choose from a variety of addition and subtraction matching games. Match four problems on the left with their answers on the right. Add 1, 2, 3, or 4. 
Arithmetic Four 
Compete against another human player at Connect Four by answering arithmetic problems in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, whether problems are whole numbers or just integers, and whether it's addition, subtraction, multiplication, and/or division. 
Arithmetic Quiz 
Test yourself by solving arithmetic questions. Choose from three levels of difficulty, and choose between whole number or integer addition, subtraction, multiplication, and/or division. 
Guess the Number? Plus 
Solve word problems in the fewest tries with the help of the computer, which will give you clues as to whether your answers are too high or too low. Choose the range of numbers from within two difficulty levels, and whether the problems involve adding & subtracting only, or all operations. 
Line Jumper 
Solve addition and subtraction problems, plotting each answer on the number line. 
Math Baseball 
Do the math problems to get runs at math baseball. Choose addition, subtraction, multiplication, or division, choose your level, and whether it's algebra style or not. 
Math Baseball  2player 
Compete against a friend at math baseball by doing math problems. Choose addition, subtraction, multiplication, or division, choose your level, and whether it's algebra style or not. 
MathCar Racing 
Stay ahead of the other car by choosing the arithmetic expression that is worth the most. You can choose from easy (addition or subtraction), medium (multiplication or division), and hard (all operations) levels. 
Multiplying/Dividing Whole Numbers 
Help Duck Von Fly get to his destination faster by selecting the correct answers to complex multiplication and division problems. You can play alone or with one or two other people. 
Soccer Shoutout 
Do the math problems to save shots in Soccer Shoutout. Choose addition, subtraction, multiplication, division, or all operations within various levels, and whether it's with fractions or not. 
Spacey Math 
Recharge the spaceship by correctly answering problems using addition, subtraction, multiplication, or division facts. 
Tic Tac Toe Squares 
Play Tic Tac Toe against the computer by correctly answering arithmetic problems. Choose from four levels of difficulty, and choose whether to answer addition, subtraction, multiplication, division, squares, cubes, square roots, or problems involving all operations. 

BAMZOOKi  Mean, Median, Mode, Range 
Find the mean, median, mode, and range of the stats on the BAMZOOKi Zooks. 
Bugs in the System 
Help the Cybersquad stop Hacker by cleaning up the bugs he infected the Cybrary with. Drag each bug to the bar graph to graph how many of each color there are. You will also have to answer some questions about the graphs. 

Baseball Math  Rounding Decimals Game 
Hit home runs and answer questions about rounding decimals to score points and move up levels in this baseballthemed game. 
Converting Fractions/Decimals 
Convert decimals to fractions in order to get shots at a target with a tank. 
Convert Fractions to Decimals 
Convert fractions to decimals by making equivalent fractions. 
Converter 
Convert fractions to decimals and vice versa by entering them into a converter to see the patterns. 
The Decimal Detectives 
Work alone to track down a thief or compete against a friend to see who can figure out the other's decimal faster. You'll work at narrowing down decimals in between other decimals to crack the case. 
Decimal Speedway 
Compete against a robot or a friend to see who can get to the finish line first. Multiply one of the numbers 14 by a decimal less than 1 to get the amount you can move, but read the instructions carefully! 
Decimals and Fractions on the Number Line 
Drag decimals and fractions to the number line and place them correctlyincorrect placement will result in the number being blown up! You can change the amount of divisions on the number line while playing to help you place them easier. 
Decimals Division: By Tenths 
Divide simple decimals by decimals to get the highest score that you can in the time you're given. 
Decimultiplication 
Practice multiplying decimals by whole numbers, 20 questions at a time. The game prompts you to enter each digit in order as you would do it in solving the problem. 
Double Fun Match Memory 
Find all the matching pairs of cards to win. Choose from periodic table symbols, European flags, clocks & time, and fractions & decimals. You can also control difficulty level. 
Fraction Decimal Percent Jeopardy 
Play Jeopardy by yourself or with friends as you convert numbers between fraction, decimal, and percent forms. 
Hoop Shoot (adding decimals) 
Add decimals to get a chance to shoot hoops on a basketball court. Play by yourself, with a friend, or as a time challenge to build up seconds of free play. 
Hoop Shoot (subtracting decimals) 
Subtract decimals to get a chance to shoot hoops on a basketball court. Play by yourself, with a friend, or as a time challenge to build up seconds of free play. 
Matching  Fractions to Decimals and Decimals to Fractions 
Click on each pair to match the four fractions with the decimals that mean the same amount. 
Power Football 
Do the decimal math problems to score at power football. Choose addition, subtraction, multiplication, or division (or all of them together), choose your level, and whether it's algebra style or not. 
Soccer Math  Adding Decimals 
Add decimals to get a chance to kick a soccer goal. 
Soccer Math  Subtracting Decimals 
Subtract decimals to get a chance to kick a soccer goal. 
Switch 
Given a list of decimals, click on the arrows below each pair to switch them until they're in order from smallest to largest, then check your answer. Refresh the page to get another set. 

Coloring Remainders 
After dividing by a specific number, find all the numbers with specific remainders (first 0, then 1, etc.) in Pascal's Triangle to create colorful patterns. You can increase the depth of the triangle, making it very challenging! 
Division Practice Game 
Do basic division problems to win stars. There is no time limit. You can control settings such as the minimum and maximum value of the divisor or the dividend, as well as the number of problems. 
Math Mayhem  Division 
Compete against other players by using your division skills as fast as you can. 
Mr. Martini's Classroom: Long Division 
Solve long division problems online by entering each digit of your work. You can check at any point to see which of the digits are correct or incorrect, and can control the number of digits in the dividend and divisor. 

Action Fraction 
Add and subtract fractions quickly to get around the racetrack ahead of your two opponents (played by computer). It starts out with adding fractions of like denominators but you'll end up having to compute common denominators in order to add and subtract some fractions! 
Addition of Like Fractions (circles) 
Add fractions with the same denominators visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of fraction circles. 
Addition of Like Fractions (lines) 
Add fractions with the same denominators visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of shaded line segments. 
Addition of Fractions  Strict (circles) 
Add mixed numbers visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of fraction circles. 
Addition of Fractions  Strict (lines) 
Add mixed numbers visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of shaded line segments. 
Addition of Unlike Fractions (circles) 
Add fractions with different denominators visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of fraction circles. 
Addition of Unlike Fractions (lines) 
Add fractions with different denominators visually by looking at the pictures and writing the numbers for the addends and sum. Pictures are of shaded line segments. 
Bounded Fraction Finder 
Name a left and right fraction, add sections to squares or circles to create those fractions, check them to be sure you're correct, then try to create another fraction in between them, and check and name it. 
Bounded Fraction Pointer 
Name a left and right fraction, add sections to squares or circles to create those fractions, check them to be sure you're correct, then try to create another fraction in between them, and check and name it. An arrow will help you keep track of where your third fraction actually is. 
Clara Fraction's Ice Cream Shop 
Convert fractions to mixed numbers in order to give each customer the exact amount of each ice cream they have requested. 
Compare Fractions 
Click on the correct sign to compare each pair of fractions. You can choose whether to play with fractions with denominators less than 10, less than 100, or less than 1,000. 
Comparing Fractions/Decimals 
Convert decimals to fractions in order to get shots at a target with a tank. 
Convert Fractions to Decimals 
Convert fractions to decimals by making equivalent fractions. 
Converter 
Convert fractions to decimals and vice versa by entering them into a converter to see the patterns. 
Decimals and Fractions on the Number Line 
Drag decimals and fractions to the number line and place them correctlyincorrect placement will result in the number being blown up! You can change the amount of divisions on the number line while playing to help you place them easier. 
Double Fun Match Memory 
Find all the matching pairs of cards to win. Choose from periodic table symbols, European flags, clocks & time, and fractions & decimals. You can also control difficulty level. 
Equivalent Fractions Finder 
Given a fraction on a number line, create more fractions that are equivalent to it, but not the same. You can change fraction type from squares to circles, and control the number of extra fractions you are creating. 
Equivalent Fractions Pointer 
Given a fraction on a number line, create more fractions that are equivalent to it, but not the same. An arrow helps you keep track of where the fraction is that you are creating. You can change fraction type from squares to circles, and control the number of extra fractions you are creating. 
Falling Numbers 
Compete against a human or a computer as you find fractional parts and pull the matching leaf answers off the tree. 
Fresh Baked Fractions 
Given four fractions, choose the one that is not equal to the others. 
Fraction Decimal Percent Jeopardy 
Play Jeopardy by yourself or with friends as you convert numbers between fraction, decimal, and percent forms. 
Fraction Finder 
Given two fractions on a number line, add sections to create pictures of them, then create a fraction in between them and name it. 
Fraction Four 
Compete against another human player at Connect Four by answering fraction problems in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, and whether problems involve percentages, fraction/decimal conversions, algebra, comparing fractions, and much more. 
Fraction Frenzy 
Match equivalent fractions before the time runs out. 
Fraction Pointer 
Given a left and right fraction, add sections to squares or circles to create those fractions, check them to be sure you're correct, then try to create another fraction in between them, and check and name it. An arrow will help you keep track of where your third fraction actually is. 
Fraction Quiz 
Solve a variety of fractionrelated questions. Choose from three levels of difficulty, and ten different types of fraction questions. 
Fraction Sorter 
Given two or more fractions, create pictorial representations of them and line them up on a number line from least to greatest. 
Fractions Introduction Game 
Win stars by identifying the name of each fraction shown. You can control the minimum and maximum denominators (within a range of 1 to 8). 
Fruit Shoot Fraction Addition 
Click on the answers to adding fractions problems as they move around the screen to gain points. You can choose whether to play a relaxed game of 10 questions or a timed game, as well as the level of difficulty (either two fractions with common denominators, three fractions with common denominators, or two fractions with different denominators). 
Fruit Shoot Fraction Subtraction 
Click on the answers to subtracting fractions problems as they move around the screen to gain points. You can choose whether to play a relaxed game of 10 questions or a timed game, as well as the level of difficulty (level 1 is common denominators, levels 2 and 3 have different denominators with level 3 being more difficult). 
Mad Minute Math  Fraction Addition 
See how many basic fraction addition problems you can do in two minutes. 
Mad Minute Math  Fraction Subtraction 
See how many basic fraction subtraction problems you can do in two minutes. 
Matching  Fractions to Decimals and Decimals to Fractions 
Click on each pair to match the four fractions with the decimals that mean the same amount. 
Mission Magnetite 
Stop Hacker from filling up the rocket tank with magnetite by matching up percents with written and visual fractions. 
Racing Bikes 
Add fourths or eighths along a number line to try to get to 5 first. You can play against the computer or a friend. 
Simplifying Fractions Game 
Simplify fractions in order to kick soccer goals. 
Single Fraction Finder 
Given a single fraction on a number line, add sections to squares or circles to create the same fraction. 
Single Fraction Pointer 
Given a single fraction on a number line, add sections to squares or circles to create the same fraction. An arrow helps you keep track of where the fraction is that you are creating. 
Soccer Math  Multiplying Fractions 
Multiply fractions to get a chance to kick a soccer goal. 
Soccer Math  Dividing Fractions 
Divide fractions to get a chance to kick a soccer goal. 
Tony Fraction's Pizza Shop 
Use fractional parts to figure out how many slices should have each topping, then sell it to the client to make money. Incorrect pizzas will lose you money, so be careful! 

Angles 
Given a set of parallel lines with one or more transversals, identify angles as right, obtuse, or acute, and name the relationship between them. 
Area Explorer 
Select a perimeter size and guess the area of the shape created, to see the relationship between the two. You can restrict the shapes only to rectangular ones. 
Faces, Edges, and Vertices 
Take this quiz on faces, edges, and vertices, and see how fast and accurate you can answer! 
General Coordinates Game 
Explore the Cartesian coordinate system by identifying the coordinates of a particular point, or by giving coordinates you want plotted. 
Geo Matho 
Play geometry bingo by matching vocabulary with pictures that illustrate each word or phrase. 
Image Tool 
Measure angles, distances, and areas on maps and aerial photos by clicking and dragging points. You can change the scale used. 
Lunar Adventure 
Get paid to zap asteroids with your laser by plotting each set of coordinates you're given. Use the money you earn to buy supplies at the supply depot. Choose between three levels of difficulty. 
Match Geometric Solids Game 
Match six geometric solids with their names by dragging and dropping the labels onto the solids. 
Match Geometric Shapes Game 
Match six geometric shapes with their names by dragging and dropping the labels onto the spaces below the shapes. 
Maze Game 
Help the robot get to the destination on the Cartesian coordinate grid without running into a mine by entering points for the robot to go to. Choose whether starting and ending positions are randomized and how many mines there are. 
Measuring the Area and Perimeter of Rectangles 
Amy and her brother Ben illustrate how to find area and perimeter, then give you a chance to find the area and perimeter of several rectangles. 
Perimeter Explorer 
Find the perimeter given a specific area. You can control the area and whether the shapes are only rectangular. 
Perimeter Game 
Win stars by finding the perimeter of squares and rectangles. You control the minimum and maximum values of the sides. 
Pythagorean Explorer 
Find the third side of a Pythagorean triangle when given the first two. Choose from three difficulty levels. 
Pythagorean Theorem Geometry Game 
Use the Pythagorean Theorem to find the length of the hypotenuse. You will need a calculator handy to calculate square roots. 
Quadrilateral Quest 
Classify quadrilaterals according to their properties, then take a quiz on the same topic. 
Shape Builder 
Identify area and perimeter for different shapes. You can choose to have the shape autodrawn for you or create yourself, as well as adjust the size of the autodrawn shapes. You can also have it put an outline around the shape. 
Shape Explorer 
Find the area and perimeter given a shape. You can adjust the size of the shape and whether the shapes are only rectangular. 
Shape Mods Geometry Game 
Transform shapes to the target location using rotations, reflections, and translations. You can set up to four actions to happen to the shape, adjust the units using the triangle slider underneath each action block, then click Transform to watch it happen. 
Shape Surveyor 
Find the area and/or the perimeter given a shape. Each correct answer unveils a portion of an archaeological dig. You can control difficulty level as well as if you're doing area only, perimeter only, or both. 
Simple Coordinates Game 
Explore the first quadrant of the Cartesian coordinate system by identifying the coordinates of a particular point, or by giving coordinates you want plotted. 
Simple Maze Game 
Help the robot get to the destination in the first quadrant of the Cartesian coordinate grid without running into a mine by entering points for the robot to go to. Choose whether starting and ending positions are randomized and how many mines there are. 
Solid Figures 
Name the geometric solid given the top, bottom, and side views. 
Squaring the Triangle 
Explore the relationship between bases and the hypotenuse in Pythagorean triangles by adjusting base length. Lengths, angles, and areas of the squares of each size will be calculated for you. 
Surface Area and Volume 
Either explore surface area and volume by adusting lengths of various sides of a prism, or find the surface area and volume given an autogenerated prism. You can choose between a rectangular or triangular prism. 
Symmetry Game 
Name the number of lines of symmetry for each shape shown. 
Tessellate! 
Create tesselations by starting with a rectangle, triangle, or hexagon. Then edit the sides and corners, choose colors, and tell it to tesselate! 
Transmographer 
Transform a square, parallelogram, or triangle by reflection, translating, or rotating it on the Cartesian coordinate system. 
Transmographer 2 
Create a polygon, then transform it by reflection, translating, or rotating it on the Cartesian coordinate system. 
Triangle Explorer 
Find the area of a triangle situated on the Cartesian coordinate system. Choose from three levels of difficulty. 
What's the Point? 
Practice the Cartesian coordinate system by identifying the coordinates of a particular point, or by clicking on the point given. Which one you do depends on the difficulty level you choose. 

Arithmetic Four 
Compete against another human player at Connect Four by answering arithmetic problems in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, whether problems are whole numbers or just integers, and whether it's addition, subtraction, multiplication, and/or division. 
Arithmetic Quiz 
Test yourself by solving arithmetic questions. Choose from three levels of difficulty, and choose between whole number or integer addition, subtraction, multiplication, and/or division. 
Color Chips  Subtraction 
Drag chips to help you solve integer subtraction problems. 
Comparing Integers 
Click on the correct sign to compare each pair of integers as fast as possible to get a high score. 
Integer Jeopardy 
Play Jeopardy by yourself or with friends as you add, subtract, multiply, and divide integers. 
Integer Warp 
Compete against three other players online (computer or human) at this racing game by multiplying integers as fast as possible. The faster you answer, the faster your ship goes! 
Math Racing  Adding Integers Game 
Drive a race car around the track while avoiding other cars and potholes. Drive over colored bottles to get integer addition problems to solveanswering correctly gives you bonus points plus special power for your car! 
Math Racing  Subtracting Integers Game 
Drive a race car around the track while avoiding other cars and potholes. Drive over colored bottles to get integer subtraction problems to solveanswering correctly gives you bonus points plus special power for your car! 
Orbit Integers 
Compete against three other players online (computer or human) at this racing game by adding integers as fast as possible. The faster you answer, the faster your ship goes! 
Space Coupe to the Rescue 
Give directions for the space coupe to fly in a positive or negative direction in order to blast virus pods and destroy them. 
Spider Match 
Compete against three other players online (computer or human) at this game by adding integers to make a specific sum. Who can get the most correct pairs in the time allotted? 

Runaway Robot 
Use logic to program the robot to get through all the traps and tricks of each level. 
Sudoku 
Play either a random sudoku puzzle or the one for that day. 
Treasure Hunt 
This variation on Minesweeper has you find all the buried treasure. Read the instructions to know how to get around the booby traps or you'll end up dead! 

Artie Ounces Soda Jerk 
Measure out the amount of soda requested. You will need to do some unit conversions in order to give the right amounts. 
Capacity Practice Game 
Win stars by converting capacity measurements (such as gallons) from one form to another. You may select either English or metric or both measurements, and can control the number of problems as well as the minimum and maximum numbers. 
Length Practice Game 
Win stars by converting length measurements from one form to another. Contains both metric and English measurements (though no conversion between the two systems), and lets you control the minimum and maximum numbers. 
Measure It! 
Measure the red line against the ruler and select the correct measurement from the options. 
Unit Conversion Memory Game 
Play Memory and match up unit conversions of time, money, etc.. 
Weight Practice Game 
Win stars by converting weight measurements from one form to another. You may select either English or metric or both measurements, and can control the number of problems as well as the minimum and maximum numbers. 

Compare Numbers Game I 
Click on the correct sign to compare each pair of whole numbers. You can choose whether to play with numbers less than 100, less than 1,000, or less than 10,000. 
Compare Numbers Game II 
Click on the correct sign to compare each pair of whole numbers. You can choose whether to play with numbers less than 100,000, less than 1,000,000, or less than 1,000,000,000. 
Cookie Dough 
Spell the words for each number, or type the number for each word. You choose which way to play, and the range of numbers used. 
Estimation Valley Golf 
Estimate the answer to problems within ten seconds in order to make your shot. You can choose the difficulty level (which affects whether you get addition/subtraction or multiplication). 
Estimator Four 
Compete against another human player at Connect Four by answering estimation problems in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, whether answers must be almost perfect, really close, or just close, and whether it's addition, multiplication, and/or percentage problems. 
Estimator Quiz 
Test yourself answering estimation problems. You can control settings such as the time limit for answering, the difficulty level, whether answers must be almost perfect, really close, or just close, and whether it's addition, multiplication, and/or percentage problems. 
Fact Family  Addition & Subtraction 
Click on the buttons to create a fact family from the numbers and operators provided. 
Family Math's Balloon Ride 
Play against a computer or your friend to compete for a free balloon ride. To win, cut the last rope holding the balloon down. You can cut either one or two ropes at a time. Can you figure out the pattern? 
Find the Missing Number Game 
Finding the missing number in the sequence to win stars. You can control whether the sequence builds by 1 up to 5, the minimum and maximum numbers, and the number of problems. 
Fly a Kite 
Type in the missing number on the factor card, then type in the missing numbers to create a fact family. 
FOSS Black Box 
Move a laser to the position you want, fire it, and use markers to mark out where you think the hidden shape is. 
FOSS Overlapping Shapes 
Take five basic shapes and three colors and attempt to match patterns. Three levels of difficulty allow you to choose how hard you want the challenge to be. 
Fruit Shoot Odd Even 
Shoot the right fruit, odd or even. But beware, the type of fruit you're targeting changes! You can choose from three levels of difficulty, and whether you're playing in relaxed or timed mode. 
Guess the Number? 
Guess the number with the help of the computer, which will give you clues as to whether your guesses are too high or too low. Choose the range of numbers from within two difficulty levels. 
More or Less Estimator 
Given a random amount of items, a length of a line, or a shape, estimate the amount/length/area. You can choose it to be random, or specifically select to estimate amounts, lengths, or areas. 
Number Cracker 
Given a pattern with a space empty, fill in the right number to complete it. You control the level of difficulty. 
Number System Muncher 
Munch the numbers belonging to the number system you're given. Be careful not to munch numbers that don't belong! 
Odd or Even Number Game 
Win stars by identifying whether each number is odd or even. You control the minimum and maximum numbers. 
One False Move 
To get out of the haunted house you're stuck in, click on the numbers in order. You can choose whether the numbers go from lowest to highest or highest to lowest, and can choose the level of difficulty from easy, medium, or hard. Extra goodies help you navigate safely. 
Pattern Chomper 
Type in the next number in each series. You can choose how large of numbers you want to play with. 
Pattern Generator 
Given a pattern with some spaces empty, fill in the right pieces to complete it. You can choose the level of difficulty, and reset the board or pattern at any time. 
Quia  Roman Numerals 
Match up the Roman numerals with their Arabic equivalents (#112). 
Roman Matching Game 
Quickly drag the basic Roman numerals (5 from #110) to the corresponding Arabic numerals to beat the clock. 
Roman Numeral Conversion Game 
Win stars by converting between Roman numerals to regular numbers. You choose the direction of conversion, as well as the minimum and maximum numbers. 
Roman Numeral Sequence Game 
Drag three Roman numerals (from #110) to boxes to order them from smallest to largest. 
Shape Sorter 
Sort shapes into one to three Venn diagrams by following a given rule. Or, let the computer force you to sort them certain ways and guess the rule being used for each circle. 
Tables and Chairs 
Change the type, arrangement, or width of tables to see how many chairs are needed to surround them. You can either explore only, or have the game present you with an arrangement of tables and ask you to name the amount of chairs needed to surround it. 
Tortoise and Hare Race 
Watch the tortoise and hare race to learn about multiplication of fractions and convergence of an infinite series of numbers. You can control the amount of headstart the tortoise has. 
Word Problem Quiz 
Test your ability to solve basic addition and subtraction word problems. You can select mixed problems or just addition or subtraction, as well as the number of problems. 

Change Maker 
Figure out the correct change. If you're right, that amount will be added to your bank. If you're wrong, the correct amount will be subtracted from your piggy bank, so be careful! 
Identify Coins Game 
Drag the names for the five major coins onto spaces below the correct coins' pictures. 

Coloring Multiples 
Find all the multiples of a specific number in Pascal's Triangle to create patterns. You can increase the depth of the triangle, making it very challenging! 
Count Multiplication Game 
Count the objects to practice multiplication. There is no time limit. You can control settings such as the minimum and maximum value of either number, the object to count (there's a lot of options!), the number of problems, and the input method for answering. 
Mad Minute Math  Multiplication 
See how many basic multiplication problems you can do in a minute. 
Math Mayhem  Multiplication 
Compete against other players by using your multiplication skills as fast as you can. 
Multiplication Game  Fishing 
As you fish with a multiplication problem pole, try to catch the fish that match your pole. 
Multiplication Practice Game 
Do basic multiplication problems to win stars. There is no time limit. You can control settings such as the minimum and maximum value of the first or second number, the number of problems, and the number of decimals (though that particular feature does not seem to workthey remain whole numbers only). 
Multiplication Tool 
Drag numbers to show all your work in order to solve multiplication problems using either the standard method, the partial products method, or the lattice method. You can have the method explained to you if you like. Problems start out with basic facts but progress to multiplying by 2 and 3digit numbers. 
Windows Wash Up 
Answer multiplication questions to move up levels as a window washer. Eight questions correct in a row gets you an upgrade to your equipment or clothing, and you can choose which fact or range of facts (from a set of three) to practice. Can you make it to the penthouse? 

Fire: Estimating Percent 
Set the probability for burning trees in a virtual forest, then start the fire. After the forest has been burned through, estimate either the number or percentage of trees burned. You can control whether the answer needs to be close, really close, or almost perfect. 
Fraction Decimal Percent Jeopardy 
Play Jeopardy by yourself or with friends as you convert numbers between fraction, decimal, and percent forms. 
Mission Magnetite 
Stop Hacker from filling up the rocket tank with magnetite by matching up percents with written and visual fractions. 
Mixtures 
Add circles to two different sides, color specific amounts, then combine them so they form specific percentages of colored vs. uncolored. Play in exploration mode, or work with an unknown percent, an unknown total, or an unknown pile. 
Number Invaders 
Keep the Number Invaders away by firing off at the answers to percent problems. You'll need to have quick hands to beat this game! 
Penguin Waiter Percent Game 
Calculate the tip for your dinner. Different difficulty levels focus on different aspects of your bill. 
Percent Shopping Game 
Drag up to five objects over to a shelf, calculate the total, and then calculate either the amount after the discount, or calculate the discount you're getting, depending on the level of game you choose. 
Percentage Calculation Practice Game 
Win stars by calculating the given percent of a number. You can control the text size of the text in the game. 
Percentage P.I. 
Answer various percentage questions to help Percentage P.I. solve the mystery of who robbed the bank. 
Sales Tax Game 
Calculate the sales tax each time and select the right combination of bills and coins to represent it from the money drawer. 
Virtual Manipulative  Percentage 
Fill in any two of three of the quantities in a percent (the part, the whole, or the percent), and the explorer will calculate the remaining quantity for you as well as show you the percent visually. 

Baseball Math  Rounding Decimals Game 
Hit home runs and answer questions about rounding decimals to score points and move up levels in this baseballthemed game. 
Halfcourt Rounding 
Answer questions on rounding correctly in order to make hoops successfully. You can play by yourself or with a friend, and you can choose the level (whether to round to the nearest ten, hundred, or tenth). 
Place Value Game 
Find the value of the underlined digit in each number. You can choose from certain numbers of problems (5, 10, 25, etc.) and levels of difficulty (less than 10,000 to greater than a million). 
Place Value Game for Kids 
Use the number machine to complete various tasks, then explore what happens to numbers as you multiply and divide by 10s and 100s. 
Place Value Practice Game 
Find the value of the underlined digit in each number to win stars. You can choose the minimum and maximum values for the numbers used. 
Place Value Puzzler 
Either click on the digit in the place given, or type the rounded version of the number. You choose which one as well as the difficulty level. 
Place Value to Thousands 
Answer questions on place value correctly so Bill can rub his magic lamp. Then you get to wish for him! 
Quia  Place Value Playoff! 
Turn over pairs of cards to find matches between expanded form and standard form of numbers. 
Quia  Place Value Rags to Riches 
Answer questions on place value and rounding in this "Who Wants to be a Millionaire"style game. (Focus is mainly on decimal places.) An alternate version of the game, using the same questions but in a different order, can be found here. 
Quia  Who Wants to Be a Place Value Master? 
Answer questions on place value and rounding in this "Who Wants to be a Millionaire"style game. 
Quia  Whole Number Place Value 
Either play alone or with a friend, answering questions on place value to the trillions in this Jeopardystyle game. 
Rounding Game 
Round each number to the underlined digit. You can choose from certain numbers of problems (5, 10, 25, etc.) and levels of difficulty (less than 10,000 to greater than a million). 
Rounding Practice Game 
Round each number to the place given to win stars. You control the place value rounded to, as well as the minimum and maximum numbers. 

Algebra Four 
Compete against another human player at Connect Four by solving algebra equations in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, and whether problems have variables on both sides, require the distributive property, are quadratic, are onestep problems, or twostep problems. 
Algebra Quiz 
Test yourself at solving algebra equations. You can control settings such as the time limit for answering, the difficulty level, and whether problems have variables on both sides, require the distributive property, are quadratic, are onestep problems, or twostep problems. 
Conic Flyer 
Explore equations for conic sections. Change settings such as the type of equation and the variables that affect horizontal and vertical translation. 
Equation Solver 
Solve equations at three different levels of difficulty. Tell what property is being used, pick the operation, and enter the term needed to do the next step of the equation. 
Foto Finish 
Try to make two racers finish a race at the same time. Each racer can run at a different speed, so you'll need to start one of them later by a few seconds. 
Function Machine 
Enter different numbers into the function machine until you can guess what the function is. 
Late Delivery 
Help Postman Phil deliver to the right houses by evaluating the expression on each door. The dog holds the value of "a" for each expression. 
Linear Function Machine 
Enter different numbers into the linear function machine until you can guess what the slope and intercept of the linear function is. 
Number Cruncher 
Enter different numbers into the number cruncher until you can guess what the function is. A table of inputs and outputs already tried out will help you. 
Order of Operations Four 
Compete against another human player at Connect Four by answering problems involving order of operations in order to receive each game piece. You can control settings such as the time limit for answering, the difficulty level, and whether it's just addition, subtraction, multiplication, division, or also exponents and/or parentheses. 
Operation Order 
You will be given a list of numbers. Fill them in the correct places to get the given answer. Choose from three difficulty levels. 
Positive Linear Function Machine 
Enter different numbers into the linear function machine until you can guess what the slope and intercept of the linear function is. The slope is restricted to positive numbers only to make things easier. 
PreAlgebra Practice Game 
Win stars by solving singlevariable equations. Choose between equations with addition, subtraction, or equations involving multiplication as well as addition. 
Save the Zogs 
Save the Zogs by correctly identifying and creating linear equations, starting with zero slope and increasing in difficulty. 
Slope Slider 
Explore how linear functions work by changing the coefficient and the constant to see the result on the graph. You can choose whether numbers are represented as decimals or fractions. 
Whole Number Cruncher 
Enter different numbers into the number cruncher until you can guess what is being added or multiplied. A table of inputs and outputs already tried out will help you. 

Alien Exponents Game 
Stop the alien spaceships from landing by click on the number that you get when you evaluate each exponent expression. 
Exponents  Less Than, Greater Than Practice 
Given two numbers with exponents, decide which is less than or greater than the other. You control the range by choosing the minimum and maximum numbers, as well as the minimum and maximum exponent values. 
Factor Game 
Click on the number that is NOT a factor of the number given to you. Can you reach 100% accuracy? 
Factorize 
For a given number, find all the factorizations for it. Then build each factorization by clicking and dragging on squares in a grid. 
Factorize 2 
For a given number, build all the factorizations for it by clicking and dragging on squares in a grid. The number versions of each factorization will appear as you enter them. 
Illuminations: Factor Game 
Play against a human or computer opponent as you try to score the most points by selecting numbers and finding factors of the numbers your opponent selects. 
Interactive Factor Tree Game 
Finish the factor trees to find the prime factorization of each number. 
Is it a prime number? 
Identify whether each number is a prime number or not. You control the range by choosing the minimum and maximum numbers. 
Martian Math 
Help some notsobright aliens repair their spaceship by calculating square roots and powers of multiplication (exponents) for them. 
Prime Factorization 
Find the prime factorization of numbers using an factor tree. If you chose level 2, then you also need to sort out factors into a Venn diagram and find the GCF and LCM of both numbers. 
Prime or Composite Number Game 
Identify numbers as either prime or composite by dragging them to to the correct boxes. 
Square Root Calculation Practice Game 
Win stars by calculating the square root of a number. You can control the text size of the text in the game. 
Tic Tac Toe Squares 
Play Tic Tac Toe against the computer by correctly answering arithmetic problems. Choose from four levels of difficulty, and choose whether to answer addition, subtraction, multiplication, division, squares, cubes, square roots, or problems involving all operations. 

Bar Graph Sorter 
Sort out shapes by shape or color by dragging them to the appropriate place on the bar graph. You can choose if the graph is horizontal or vertical. 
Coin Toss 
Explore coin toss probabilities by entering the number of times you want it tossed. You can choose whether your results are in a list, table, or ratio format. 
Experimental Probability 
Explore probabilities by spinning spinners or rolling dice and seeing the tally results. You can choose between a simple twocolor spinner, a spinner you can edit, or two dice whose faces you can control. 
Marbles 
Explore sampling by setting a number of different colored marbles in a bag and generating a number of trials. You can decide if the order matters, and whether the marbles are replaced or not. 
Plop It! 
Add, delete, or drag blocks on a bar graph and watch the mean, median, and mode change. You can also enter data by typing it into a box and updating the graph. 
Probability Fair 
Select probabilities to win tickets to get into the fair, then play games once you're there to win more tickets. Every game costs tickets to play, so be sure you're successful enough to win tickets for your next games! 

Dirt Bike Proportions 
Compete against three other players online (computer or human) at this dirt bike racing game by solving proportions as fast as possible. The faster you answer, the faster your bike goes! 

Count Subtraction Game 
Count the objects to practice subtraction. There is no time limit. You can control settings such as the minimum and maximum value of the bottom number, the object to count and take away (there's a lot of options!), the number of problems, and the input method for answering. 
House Coloring Subtraction Game 
Solve subtraction problems to figure out what color to put on each part of a house. 
Mad Minute Math  Subtraction 
See how many basic subtraction problems you can do in a minute. 
Math Mayhem  Subtraction 
Compete against other players by using your subtraction skills as fast as you can. 
Subtraction Game  Fishing 
As you fish with a subtraction problem pole, try to catch the fish that match your pole. 
Subtraction of 2Digit Numbers 
Subtract 2digit numbers stepbystep on the side of the train cars. If you're stuck, the computer will walk you through what you need to do. 
Subtraction Practice Game 
Do basic subtraction problems to win stars. There is no time limit. You can control settings such as the minimum and maximum value of the second number, the number of problems, and the number of decimals (though that particular feature does not seem to workthey remain whole numbers only). 

Clock Wise 
Enter a new time and watch the clock move to match it, or have the clock move to a random time and name what time it is. You control the speed of the animation. 
Double Fun Match Memory 
Find all the matching pairs of cards to win. Choose from periodic table symbols, European flags, clocks & time, and fractions & decimals. You can also control difficulty level. 
Elapsed Time 
Either count to find the elapsed time, given a starting and ending time, or name the elapsed time as you look at the clocks. Choose from three levels of difficultycounting by one hour, five minutes, or 1 minute. Clocks can be analog or digital, and you can control whether they are animated or not. 
Elapsed Time Two 
Either count to find the ending time, given a starting and elapsed time, or name the ending time as you look at the clock. Choose from three levels of difficultycounting by one hour, five minutes, or 1 minuteand whether you are adding time, subtracting time, or both. You control whether clocks are animated or not. 
Stopwatch 
Either run a timer until you choose to stop, or set a previously chosen time to the timer and have it count down to 0. 
Telling Time Game 
Earn points by looking at the clock and telling the time. You can control whether it's hourly, by half hour, quarter hour, or 5 minute increments. 
Time Works 
Put all the numbers on the clock in the correct positions. 

Grand Slam Math 
Answer questions correctly to allow the baseball player to run home runs. You get three chances to answer correctly, and you can get help on knowing what operation to use after getting the first try wrong. You can choose the level (level 1 involves addition & subtraction word problems, level 2 involves multiplication and division word problems). 
Math Hoops 
Answer five word problems (of different types) correctly in order to have some time to make as many hoops as possible. 
Monster Crossing  Addition Word Problems 
Help the monster get across the river and road and to the correct answer to the addition word problem. 
Monster Crossing  Division Word Problems 
Help the monster get across the river and road and to the correct answer to the division word problem. 
Monster Crossing  Multiplication Word Problems 
Help the monster get across the river and road and to the correct answer to the multiplication word problem. 
Monster Crossing  Subtraction Word Problems 
Help the monster get across the river and road and to the correct answer to the subtraction word problem. 
Word Problems with Katie 
Answer questions correctly to help Katie run a home run. You get three chances to answer correctly, and you can get help on knowing what operation to use after getting the first try wrong. You can choose the level (level 1 involves addition & subtraction word problems, level 2 involves multiplication and division word problems). 

