Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 685 · 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. 1.1 + 6 =
2. 2.There are 6 red kites and 5 pink kites. How many kites are there in all?
3. 3.2 + 18 =
4. 4.4 + 3 =
5. 5.Nisha has 3 pencils and gets 10 pencils more. How many pencils does Nisha have now?
6. 6.3 + ? = 18
7. 7.7 + 7 + 5 =
8. 8.18 + 1 =
9. 9.Farhan has 7 balls and gets 7 balls more. How many balls does Farhan have now?
10. 10.4 + 3 + 1 =
11. 11.2 + 7 + 9 =
12. 12.Aarav has 11 kites and gets 3 kites more. How many kites does Aarav have now?
13. 13.? + 14 = 20
14. 14.6 + 7 + 2 =
15. 15.1 + 1 + 4 =
16. 16.5 + 6 + 9 =
17. 17.17 + 3 =
18. 18.18 + ? = 20
19. 19.3 + 1 + 6 =
20. 20.Ananya has 15 balls and gets 3 balls more. How many balls does Ananya have now?
21. 21.Aarav has 9 balls and gets 9 balls more. How many balls does Aarav have now?
22. 22.5 + 6 + 1 =
23. 23.3 + 6 + 6 =
24. 24.1 + ? = 7
25. 25.? + 7 = 11
26. 26.7 + 3 + 6 =
27. 27.6 + 2 + 12 =
28. 28.1 + ? = 18
29. 29.8 + 3 + 6 =
30. 30.There are 9 yellow kites and 6 pink kites. How many kites are there in all?
31. 31.3 + ? = 5
32. 32.12 + 1 =
33. 33.7 + 8 + 5 =
34. 34.There are 4 green kites and 11 yellow kites. How many kites are there in all?
35. 35.1 + 7 + 8 =
36. 36.18 + 2 =
37. 37.3 + 5 + 8 =
38. 38.Rohan has 13 pencils and gets 3 pencils more. How many pencils does Rohan have now?
39. 39.Isha has 9 balloons and gets 7 balloons more. How many balloons does Isha have now?
40. 40.There are 9 blue crayons and 6 yellow crayons. How many crayons are there in all?

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