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Maths Year 1 Addition and Subtraction
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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:  

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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

 

Answer

You can use subtraction. Here's how.

17 - 6 = 11

So the missing number is = 11

 

Check your answer:

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
  • ANSWERS
  • Question 1

Find the missing number. Use subtraction.

Type the value.

 

 ? - 7 = 12
CORRECT ANSWER
19
EDDIE SAYS

12 + 7 = 19

Missing number = 19

Check:

19 − 7 = 12

  • ANSWERS
  • Question 2

Find the missing number. Use subtraction.

Type the value.

 

? - 4 = 3
CORRECT ANSWER
7
EDDIE SAYS

4 + 3 = 7

Missing number = 7

Check:

7 − 4 = 3

  • ANSWERS
  • Question 3

Find the missing number. Use subtraction.

Type the value.

 

7 - 3 =  ?
CORRECT ANSWER
4
EDDIE SAYS

7 − 3 = 4

Missing number = 4

Check:

4 + 3 = 7

  • ANSWERS
  • Question 4

Find the missing number. Use subtraction.

Type the value.

 

3 -  ? = 2
CORRECT ANSWER
1
EDDIE SAYS

3 − 2 = 1

Missing number = 1

Check:

3 − 1 = 2

  • ANSWERS
  • Question 5

Find the missing number. Use subtraction.

Type the value.

 

18 - 3 = ?
CORRECT ANSWER
15
EDDIE SAYS

18 − 3 = 15

Missing number = 15

Check:

15 + 3 = 18

  • ANSWERS
  • Question 6

Find the missing number. Use subtraction.

Type the value.

 

? - 4 = 10
CORRECT ANSWER
14
EDDIE SAYS

10 + 4 = 14

Missing number = 14

Check:

14 − 4 = 10

  • ANSWERS
  • Question 7

Find the missing number. Use subtraction.

Type the value.

 

9 -  ? = 2
CORRECT ANSWER
7
EDDIE SAYS

9 − 2 = 7

Missing number = 7

Check:

2 + 7 = 9

  • ANSWERS
  • Question 8

Find the missing number. Use subtraction.

Type the value.

 

? - 6 = 8
CORRECT ANSWER
14
EDDIE SAYS

6 + 8 = 14

Missing number = 14

Check:

14 − 6 = 8

  • ANSWERS
  • Question 9

Find the missing number. Use subtraction.

Type the value.

 

 ? - 1 = 10
CORRECT ANSWER
11
EDDIE SAYS

10 + 1 = 11

Missing number = 11

Check:

11 − 1 = 10

  • ANSWERS
  • Question 10

Find the missing number. Use subtraction.

Type the value.

 

 ? - 6 = 11
CORRECT ANSWER
17
EDDIE SAYS

6 + 11 = 17

Missing number = 17

Check:

17 − 6 = 11

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