Adding and Subtracting Whole Numbers

Front

What is addition?

Back

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

Front

What is subtraction?

Back

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

Front

What is the sum of 45 and 32?

Back

The sum of 45 and 32 is 77.

Front

What is the difference between 84 and 47?

Back

The difference between 84 and 47 is 37.

Front

What is the sum of 29 and 34?

Back

The sum of 29 and 34 is 63.

Front

What is the difference between 58 and 19?

Back

The difference between 58 and 19 is 39.

Front

What is the sum of 23 and 56?

Back

The sum of 23 and 56 is 79.

Front

How do you check your addition?

Back

You can check your addition by using the inverse operation of subtraction to see if the sum matches the original numbers.

Front

How do you check your subtraction?

Back

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

Front

What is a whole number?

Back

A whole number is a non-negative integer, which includes zero and all positive integers.