Middle Group Addition and Subtraction to 20

Front

What is the result of 4 - 1?

Back

3

Front

What is 15 - 8?

Back

7

Front

What is the result of 15 - 2?

Back

13

Front

What is 20 - 10?

Back

10

Front

What is 10 - 5?

Back

5

Front

What is the definition of subtraction?

Back

Subtraction is the operation of finding the difference between two numbers.

Front

What is the relationship between addition and subtraction?

Back

Addition is the process of finding the total or sum by combining two or more numbers, while subtraction is the process of finding the difference between numbers.

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the numbers in an addition problem does not change the sum.

Front

What is the associative property of addition?

Back

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

Front

How do you check your subtraction answer?

Back

You can check your subtraction answer by adding the difference to the smaller number to see if it equals the larger number.