Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 38 · 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.Kavya has 8 kites and gets 6 kites more. How many kites does Kavya have now?
2. 2.2 + 1 + 7 =
3. 3.15 + 3 =
4. 4.14 + 5 =
5. 5.1 + 14 =
6. 6.There are 11 blue crayons and 4 white crayons. How many crayons are there in all?
7. 7.1 + 3 + 12 =
8. 8.There are 6 yellow beads and 12 white beads. How many beads are there in all?
9. 9.3 + 16 =
10. 10.7 + 12 =
11. 11.2 + 5 + 1 =
12. 12.? + 11 = 20
13. 13.1 + ? = 4
14. 14.There are 3 blue balls and 14 red balls. How many balls are there in all?
15. 15.10 + 3 =
16. 16.11 + ? = 12
17. 17.2 + 7 + 7 =
18. 18.There are 7 red beads and 11 yellow beads. How many beads are there in all?
19. 19.? + 1 = 7
20. 20.8 + 2 =
21. 21.3 + 5 + 9 =
22. 22.There are 3 pink balloons and 14 red balloons. How many balloons are there in all?
23. 23.9 + 10 =
24. 24.13 + ? = 17
25. 25.10 + 1 =
26. 26.8 + 9 =
27. 27.Farhan has 7 marbles and gets 12 marbles more. How many marbles does Farhan have now?
28. 28.2 + ? = 7
29. 29.3 + 6 + 6 =
30. 30.8 + 6 + 6 =
31. 31.Arjun has 2 balloons and gets 2 balloons more. How many balloons does Arjun have now?
32. 32.There are 9 blue balloons and 8 green balloons. How many balloons are there in all?
33. 33.There are 12 white beads and 3 pink beads. How many beads are there in all?
34. 34.3 + 8 + 2 =
35. 35.1 + ? = 12
36. 36.5 + 1 + 4 =
37. 37.18 + 1 =
38. 38.3 + 1 + 13 =
39. 39.4 + 3 + 10 =
40. 40.There are 9 blue beads and 7 red beads. How many beads are there in all?

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