Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 765 · 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 + ? = 17
2. 2.? + 10 = 12
3. 3.There are 3 green crayons and 7 pink crayons. How many crayons are there in all?
4. 4.Priya has 10 balloons and gets 5 balloons more. How many balloons does Priya have now?
5. 5.Lakshmi has 2 flowers and gets 14 flowers more. How many flowers does Lakshmi have now?
6. 6.6 + 1 =
7. 7.There are 5 red kites and 15 pink kites. How many kites are there in all?
8. 8.There are 11 red balls and 7 blue balls. How many balls are there in all?
9. 9.1 + 6 + 10 =
10. 10.8 + 2 + 7 =
11. 11.? + 4 = 10
12. 12.1 + 4 + 3 =
13. 13.12 + 6 =
14. 14.3 + 3 + 7 =
15. 15.4 + 8 + 5 =
16. 16.12 + 3 =
17. 17.6 + 1 + 6 =
18. 18.17 + 3 =
19. 19.2 + 5 + 2 =
20. 20.3 + ? = 4
21. 21.1 + 1 + 7 =
22. 22.6 + ? = 7
23. 23.1 + 2 =
24. 24.1 + ? = 3
25. 25.There are 4 green beads and 16 white beads. How many beads are there in all?
26. 26.16 + 1 =
27. 27.6 + 5 =
28. 28.1 + 7 + 2 =
29. 29.5 + ? = 6
30. 30.11 + ? = 13
31. 31.8 + 1 + 7 =
32. 32.7 + 7 + 2 =
33. 33.Zoya has 13 books and gets 2 books more. How many books does Zoya have now?
34. 34.There are 9 pink crayons and 9 red crayons. How many crayons are there in all?
35. 35.8 + 8 =
36. 36.There are 3 yellow beads and 9 white beads. How many beads are there in all?
37. 37.18 + 1 =
38. 38.14 + 4 =
39. 39.Lakshmi has 3 balls and gets 11 balls more. How many balls does Lakshmi have now?
40. 40.There are 10 pink balls and 6 yellow balls. How many balls are there in all?

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