# Find the Difference Using Addition or Subtraction

In this worksheet, students will use addition or subtraction to find the missing number.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Understand Relationship Between Addition and Subtraction

Difficulty level:

#### Worksheet Overview

Example

Find the value of the missing number.

 35 + = 49

We need to find the difference between the numbers 35 and 49.

We can start at 35 and count on to get to 49. This would be 14 numbers:  35 + 14 = 49

We could also start at 49 and count back to 35.  This would also be 14 numbers: 49 - 35 = 14

Both methods are correct and give us the same answer of 14. Which method works best for you?

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