Mathematics Concepts

Front

Sum

Back

The sum is the answer to an addition problem.

Front

Addend

Back

Addends are the numbers being added together.

Front

Difference

Back

The difference is the answer to a subtraction problem.

Front

Inverse Operation

Back

Inverse means opposite. Inverse operations undo each other. Subtraction and addition are inverse operations.

Front

Variable

Back

A variable is a letter or symbol that stands for an unknown number.

Front

Example of finding the sum.

Back

23 + 45 = 68

Front

Example of addends in an addition problem.

Back

23 + 45 = 68