Addition and Subtraction: Find the Number (1-20)

In this worksheet, students use their knowledge of addition, subtraction and number bonds to 20 to fill in the missing elements of the problems.

Key stage: KS 1

Curriculum topic: Number: Addition and Subtraction

Curriculum subtopic: Solve Add/Subtract Problems to 20

Difficulty level:

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Worksheet Overview

This worksheet is about changing a story into maths.

Look at the ladybirds on this plant.

Count them.

There are 12 ladybirds.

Now look at this picture.

4 ladybirds have flown away.

How many are left on the plant?

8 are left on the plant.

We started with 12 and 4 flew away.

In maths, this can be written as:

12 - 4

Now 12 - 4 = 8

So 8 are left on the plant.

12 - 4 = 8 tells the story of how many ladybirds are left on the plant.

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Preview activity

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