Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 9 · 40 sums

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

1. 1.There are 3 white kites and 17 green kites. How many kites are there in all?
2. 2.7 + 2 + 1 =
3. 3.10 + 5 =
4. 4.11 + ? = 19
5. 5.7 + 3 + 8 =
6. 6.1 + ? = 3
7. 7.1 + 6 + 7 =
8. 8.There are 12 pink balls and 5 yellow balls. How many balls are there in all?
9. 9.? + 18 = 19
10. 10.There are 6 blue balloons and 6 red balloons. How many balloons are there in all?
11. 11.? + 7 = 17
12. 12.1 + 4 + 2 =
13. 13.Rahul has 5 shells and gets 1 shell more. How many shells does Rahul have now?
14. 14.10 + 10 =
15. 15.5 + ? = 13
16. 16.3 + ? = 4
17. 17.There are 9 white kites and 6 pink kites. How many kites are there in all?
18. 18.5 + 11 =
19. 19.There are 3 yellow balloons and 5 red balloons. How many balloons are there in all?
20. 20.Meera has 9 pencils and gets 1 pencil more. How many pencils does Meera have now?
21. 21.3 + 7 + 8 =
22. 22.2 + 7 + 11 =
23. 23.11 + ? = 15
24. 24.Arjun has 4 mangoes and gets 11 mangoes more. How many mangoes does Arjun have now?
25. 25.1 + 11 =
26. 26.12 + 6 =
27. 27.4 + 5 + 1 =
28. 28.10 + 8 =
29. 29.Pooja has 4 marbles and gets 7 marbles more. How many marbles does Pooja have now?
30. 30.There are 6 green balls and 2 white balls. How many balls are there in all?
31. 31.4 + 8 =
32. 32.3 + 17 =
33. 33.8 + 4 + 2 =
34. 34.11 + 6 =
35. 35.17 + 1 =
36. 36.Meera has 13 pencils and gets 2 pencils more. How many pencils does Meera have now?
37. 37.6 + 1 + 8 =
38. 38.2 + ? = 8
39. 39.2 + 8 + 6 =
40. 40.6 + 1 + 9 =

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