# 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:

### QUESTION 1 of 10

This worksheet is about changing a story into maths.

Look at the ladybirds on this plant.

Count them.

Now look at this picture.

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.

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 + 2 = 10

8 - 6 = 2

8 - 2 = 6

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

9 + 2 = 11

8 - 7 = 1

9 - 2 = 7

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 - 3 = 5

8 - 5 = 3

8 - 2 = 6

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

9 + 3 = 12

9 - 3 = 6

9 - 3 = 7

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 - 4 = 5

8 - 4 = 4

8 - 8 = 4

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 4 = 8

12 - 6 = 6

12 - 8 = 4

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

11 - 6 = 5

12 - 6 = 6

11 - 5 = 6

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 7 = 4

12 - 6 = 5

12 - 7 = 5

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

10 - 6 = 4

12 - 7 = 4

11 - 7 = 4

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 4 = 8

12 - 6 = 6

12 - 8 = 4

• Question 1

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 - 2 = 6
EDDIE SAYS
We start with 8 and 2 fly away, leaving 6 on the plant.
• Question 2

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

9 - 2 = 7
EDDIE SAYS
We start with 9 and 2 fly away, leaving 7 on the plant.
• Question 3

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 - 3 = 5
EDDIE SAYS
We start with 8 and 3 fly away, leaving 5 on the plant.
• Question 4

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

9 - 3 = 6
EDDIE SAYS
We start with 9 and 3 fly away, leaving 6 on the plant.
• Question 5

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

8 - 4 = 4
EDDIE SAYS
We start with 8 and 4 fly away, leaving 4 on the plant.
• Question 6

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 6 = 6
EDDIE SAYS
We start with 12 and 6 fly away, leaving 6 on the plant.
• Question 7

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

11 - 6 = 5
EDDIE SAYS
We start with 11 and 6 fly away, leaving 5 on the plant.
• Question 8

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 7 = 5
EDDIE SAYS
We start with 12 and 7 fly away, leaving 5 on the plant.
• Question 9

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

11 - 7 = 4
EDDIE SAYS
We start with 11 and 7 fly away, leaving 4 on the plant.
• Question 10

Look at this picture of ladybirds on a plant.

A few seconds later, some of the ladybirds fly away.

Which of these calculations show how many are left on the plant?

12 - 8 = 4
EDDIE SAYS
We start with 12 and 8 fly away, leaving 4 on the plant.
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