 # Addition and Subtraction: Find the Missing Number (1)

In this worksheet, students use subtraction to find the missing number in an addition. Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add/Subtract up to Four-Digit Numbers

Difficulty level:   ### QUESTION 1 of 10

Example

Find the missing number.

+ 136 = 192

Adding and subtracting are opposites (inverses).

So to work out the missing number we simply subtract.

192 - 136 = 56

Find the missing number.

+ 77 = 109

Find the missing number.

+ 114 = 146

Find the missing number.

+ 81 = 142

Find the missing number.

+ 86 = 129

Find the missing number.

+ 97 = 161

Find the missing number.

+ 101 = 117

Find the missing number.

+ 68 = 147

Find the missing number.

+ 100 = 134

Find the missing number.

+ 91 = 116

Find the missing number.

+ 55 = 136
• Question 1

Find the missing number.

+ 77 = 109
32
• Question 2

Find the missing number.

+ 114 = 146
32
• Question 3

Find the missing number.

+ 81 = 142
61
• Question 4

Find the missing number.

+ 86 = 129
43
• Question 5

Find the missing number.

+ 97 = 161
64
• Question 6

Find the missing number.

+ 101 = 117
16
• Question 7

Find the missing number.

+ 68 = 147
79
• Question 8

Find the missing number.

+ 100 = 134
34
• Question 9

Find the missing number.

+ 91 = 116
25
• Question 10

Find the missing number.

+ 55 = 136
81
---- OR ----

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