# Addition and Subtraction: Find the Missing Numbers (4)

In this worksheet, students use addition and subtraction to work out the missing number in a problem.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Understand Relationship Between Addition and Subtraction

Difficulty level:

### QUESTION 1 of 10

In this worksheet, you must work out the missing number in an addition sum.

Example

Find out the value of the missing number.

 25 + = 28

The opposite of adding is taking away.

We can work this out by doing 28 - 25 = 3

Or we can count on from 25.....26, 27, 28 ........ that's 3 numbers.

Find out the value of the missing number.

 19 + 2 =

Find out the value of the missing number.

 6 + = 25

Find out the value of the missing number.

 27 + = 28

Find out the value of the missing number.

 15 + 9 =

Find out the value of the missing number.

 10 + = 28

Find out the value of the missing number.

 20 + = 24

Find out the value of the missing number.

 17 + 1 =

Find out the value of the missing number.

 11 + = 22

Find out the value of the missing number.

 17 + 5 =

Find out the value of the missing number.

 23 + = 25
• Question 1

Find out the value of the missing number.

 19 + 2 =
21
EDDIE SAYS
19 + 2 = 21
• Question 2

Find out the value of the missing number.

 6 + = 25
19
EDDIE SAYS
25 - 6 = 19
• Question 3

Find out the value of the missing number.

 27 + = 28
1
EDDIE SAYS
28 - 27 = 1
• Question 4

Find out the value of the missing number.

 15 + 9 =
24
EDDIE SAYS
15 + 9 = 24
• Question 5

Find out the value of the missing number.

 10 + = 28
18
EDDIE SAYS
28 - 10 = 18
• Question 6

Find out the value of the missing number.

 20 + = 24
4
EDDIE SAYS
24 - 20 = 4
• Question 7

Find out the value of the missing number.

 17 + 1 =
18
EDDIE SAYS
17 + 1 = 18
• Question 8

Find out the value of the missing number.

 11 + = 22
11
EDDIE SAYS
22 - 11 = 11
• Question 9

Find out the value of the missing number.

 17 + 5 =
22
EDDIE SAYS
17 + 5 = 22
• Question 10

Find out the value of the missing number.

 23 + = 25
2
EDDIE SAYS
25 - 23 = 2
---- OR ----

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