Missing number sums (up to 20) worksheets for Class 1

Find the missing number that makes the sum true.

Class 1, ages 6–7 (India)
Topic: Addition and subtraction
Easy, medium and hard levels, with fresh questions every time
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More addition and subtraction for Class 1

All Class 1 topics

Sample questions

Class 1, medium level. Your worksheet will have new questions.

1.2 + = 10

2.4 + = 20

3.13 + = 17

4.8 + = 11

5.9 + = 17

6.8 + = 9

7.5 + = 20

8.3 + = 9