# Find the Missing Number Using Addition or Subtraction

In this worksheet, students will find missing numbers using addition, subtraction and number bond knowledge.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 20

Popular topics:   Subtraction worksheets, Addition worksheets

Difficulty level:

#### Worksheet Overview

We can add and subtract to find missing numbers. Look at this problem.

 + 2 = 5

We can find the missing number like this.

 5 - 2 = 3

We put the problem into a different order.

Start with the answer, 5.

Subtract 2.

5 - 2 = 3

The missing number is 3.

Now check.

 3 + 2 = 5

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