# Addition and Subtraction: Find the Missing Number (2)

In this worksheet, students solve missing number problems using subtraction (0-20).

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 20

Difficulty level:

### QUESTION 1 of 10

In subtraction, you take something away. (It is the opposite of addition. In addtion, you add something on.)

Example

Look at this problem. A number is missing.

You need to find its value.

 6 + ? = 17

You can use subtraction. Here's how.

17 - 6 = 11

So the missing number is = 11

6 + 11 = 17

Find the missing number. Use subtraction.

Type the value.

 ? - 7 = 12

Find the missing number. Use subtraction.

Type the value.

 ? - 4 = 3

Find the missing number. Use subtraction.

Type the value.

 7 - 3 = ?

Find the missing number. Use subtraction.

Type the value.

 3 - ? = 2

Find the missing number. Use subtraction.

Type the value.

 18 - 3 = ?

Find the missing number. Use subtraction.

Type the value.

 ? - 4 = 10

Find the missing number. Use subtraction.

Type the value.

 9 - ? = 2

Find the missing number. Use subtraction.

Type the value.

 ? - 6 = 8

Find the missing number. Use subtraction.

Type the value.

 ? - 1 = 10

Find the missing number. Use subtraction.

Type the value.

 ? - 6 = 11
• Question 1

Find the missing number. Use subtraction.

Type the value.

 ? - 7 = 12
19
EDDIE SAYS

12 + 7 = 19

Missing number = 19

Check:

19 − 7 = 12

• Question 2

Find the missing number. Use subtraction.

Type the value.

 ? - 4 = 3
7
EDDIE SAYS

4 + 3 = 7

Missing number = 7

Check:

7 − 4 = 3

• Question 3

Find the missing number. Use subtraction.

Type the value.

 7 - 3 = ?
4
EDDIE SAYS

7 − 3 = 4

Missing number = 4

Check:

4 + 3 = 7

• Question 4

Find the missing number. Use subtraction.

Type the value.

 3 - ? = 2
1
EDDIE SAYS

3 − 2 = 1

Missing number = 1

Check:

3 − 1 = 2

• Question 5

Find the missing number. Use subtraction.

Type the value.

 18 - 3 = ?
15
EDDIE SAYS

18 − 3 = 15

Missing number = 15

Check:

15 + 3 = 18

• Question 6

Find the missing number. Use subtraction.

Type the value.

 ? - 4 = 10
14
EDDIE SAYS

10 + 4 = 14

Missing number = 14

Check:

14 − 4 = 10

• Question 7

Find the missing number. Use subtraction.

Type the value.

 9 - ? = 2
7
EDDIE SAYS

9 − 2 = 7

Missing number = 7

Check:

2 + 7 = 9

• Question 8

Find the missing number. Use subtraction.

Type the value.

 ? - 6 = 8
14
EDDIE SAYS

6 + 8 = 14

Missing number = 14

Check:

14 − 6 = 8

• Question 9

Find the missing number. Use subtraction.

Type the value.

 ? - 1 = 10
11
EDDIE SAYS

10 + 1 = 11

Missing number = 11

Check:

11 − 1 = 10

• Question 10

Find the missing number. Use subtraction.

Type the value.

 ? - 6 = 11
17
EDDIE SAYS

6 + 11 = 17

Missing number = 17

Check:

17 − 6 = 11

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