Addition and Subtraction

Front

What is the result of adding 64 and 16?

Back

80

Front

What equation has 6 as its solution?

Back

15 = __ + 9

Front

What is the result of subtracting 27 from 99?

Back

72

Front

What is the result of subtracting 35 from 81?

Back

46

Front

What subtraction equation can be used to solve 5 + 13 = ?

Back

13 - 5 = 8

Front

What is the definition of addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Front

What is the definition of subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another.

Front

What is the commutative property of addition?

Back

The commutative property of addition states that changing the order of the addends does not change the sum.

Front

What is the associative property of addition?

Back

The associative property of addition states that the way in which numbers are grouped does not change their sum.

Front

How do you check the result of an addition problem?

Back

You can check the result of an addition problem by subtracting one of the addends from the sum.