Addition and Subtraction
Math Baseball
Complete the Number Model
Speed Grid Addition
Speed Grid Subtraction
Sum Sense
Addition Attac

Addition (multi-digit numbers)
Batter's Up Baseball
Double Digits Math Game

Subtraction (Multi-Digit)
Trade First
Ghost Bust Subtraction Practice (2 Player)

Addition with 3 or more Addends
Callum's Addition Pyramid
Magic Math Squares
Power Lines
Da Numba
Operation Order

FACT POWER: Multiplication
Math Baseball (choose multiplication or division)
Math Mayhem (choose multiplication or division)
Space Shuttle Launch (choose multiplication or division)
Save the Apples (choose multiplication or division)
Robot Calculator (choose multiplication or division)
Power Football (choose multiplication or division)

Word Problems
Circus Fun
Number Nut
Math Hoops

Number Grids
Give a Dog a Bone!

Skip Counting
Fishy 2's
Skip Counting by 2's to 100
Skip Count on Learning Planet

Money
Counting Coins
http://www.playtolearn.com/index.php/count-money
Is It Enough?
Cash Out

Telling Time
Tons of Telling Time Games!

Measuring
The Ruler Game
Measure It!
Units of Measurement
Animal Length Measurements
Inchy Picnic

Fractions

Graphing

Calendar Work

Multiplication

Comparing Numbers

Odd and Even

Counting Back

Patterns

Place Value