Adding and Subtracting

Front

What is the result of 20 - 16?

Back

4

Front

What is the result of 18 - 10?

Back

8

Front

What is the result of 9 + 6?

Back

15

Front

What is the result of 16 - 4?

Back

12

Front

What is the result of 16 + 4?

Back

20

Front

Define addition in mathematical terms.

Back

Addition is the process of calculating the total of two or more numbers or amounts.

Front

Define subtraction in mathematical terms.

Back

Subtraction is the process 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 in addition does not change the sum.

Front

What is the identity property of addition?

Back

The identity property of addition states that adding zero to any number does not change the value of that number.