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Complete the Subtraction: Numbers up to 20

In this worksheet, students will use subtraction to solve missing number problems.

'Complete the Subtraction:  Numbers up to 20' worksheet

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add and Subtract to 20

Difficulty level:  

Worksheet Overview

Subtraction is taking something away.

You can use subtraction to find missing numbers. You do it like this.

 

Example

Count the top row of chicks. There are 10.

Take 2 chicks away.

 

What's the difference? (How many are left?)

 

chickchickchickchickchickchickchickchickchickchick

subtract

chickchick

 

Answer: 8

10 - 2 = 8

 

You can use a number line to help you with subtraction.

Start at the number 10 on the line and move two places to the left on the line.

You reach the number 8. So you can see that 10 - 2 = 8

 

number line to 10

 

You always move to the left on a number line when you are subtracting a number.

 

left arrow

 

Let's have a go at some questions now.

 

thumbs up

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