7th Grade - Number System:

Computation with Rational Numbers -

Addition and Subtraction


Adding and Subtracting Integers with Chips Use this “gizmo” to figure out the answer to basic addition and subtraction problems involving integers
All About Fractions Need to brush up on fraction concepts? Check out this informative site
Integer Operations Game Practice integer operations with this game – play against the computer or a friend
Laws of Arithmetic Read about various properties of addition, subtraction, multiplication, and division here