# Understand that Subtracting Cannot be Done in Any Order

In this worksheet, students will learn that addition can be done in any order but subtraction cannot.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Understand Order for Addition/Subtraction

Popular topics:   Subtraction worksheets, Addition worksheets

Difficulty level:

#### Worksheet Overview

Notice that:

6 + 5 = 11    and    5 + 6 = 11

7 + 2 = 9    and    2 + 7 = 9

8 + 13 = 21    and    13 + 8 = 21

28 + 59 = 87    and    59 + 28 = 87

Adding can be done in any order.

You always get the same answer.

*****WARNING*****

Subtracting is different.

28 - 19 = 9    but    19 - 28 = -9

They are not the same.

Subtracting cannot be done in any order.

Does that make sense?

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