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Learn About Subtraction: Write Two Facts (1)

In this worksheet, students learn about two more subtraction facts from each of the given sums.

'Learn About Subtraction: Write Two Facts (1)' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 1000

Difficulty level:  

Worksheet Overview

Addition and Subtraction are closely linked.

 

From any addition fact, we can normally also get two subtraction facts.

 

Look at the addition fact:

 

3 + 5 = 8.

 

From this we can get the two subtraction facts:

 

8 - 5 = 3

8 - 3 = 5

 

This works with all numbers, even bigger ones.

 

Example

Complete the two subtraction facts from the following addition fact, to work out the values of A and B.

21 + 68 = 89

 

89 - 68 = A

89 - 21 = B

 

Answer

Look at the addition fact:

 

21 + 68 = 89.

 

From this we can get the two subtraction facts:

 

89 - 68 = 21

89 - 21 = 68

 

So we have shown that:

 

A = 21

B = 68

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