Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 562 · 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 9 red crayons and 8 green crayons. How many crayons are there in all?
2. 2.4 + 4 =
3. 3.There are 8 white crayons and 10 green crayons. How many crayons are there in all?
4. 4.5 + 8 + 1 =
5. 5.There are 10 red balls and 8 green balls. How many balls are there in all?
6. 6.1 + 7 + 6 =
7. 7.? + 6 = 10
8. 8.? + 2 = 3
9. 9.? + 4 = 14
10. 10.15 + 1 =
11. 11.11 + 1 =
12. 12.16 + 4 =
13. 13.12 + 2 =
14. 14.Rahul has 11 balls and gets 7 balls more. How many balls does Rahul have now?
15. 15.There are 12 red flowers and 8 blue flowers. How many flowers are there in all?
16. 16.Manav has 9 laddoos and gets 6 laddoos more. How many laddoos does Manav have now?
17. 17.? + 10 = 13
18. 18.Meera has 11 flowers and gets 9 flowers more. How many flowers does Meera have now?
19. 19.1 + 14 =
20. 20.6 + 5 + 6 =
21. 21.1 + ? = 19
22. 22.5 + 4 + 5 =
23. 23.7 + 1 + 8 =
24. 24.2 + 1 + 5 =
25. 25.? + 1 = 3
26. 26.6 + 12 =
27. 27.2 + 5 + 3 =
28. 28.Aarav has 14 balloons and gets 6 balloons more. How many balloons does Aarav have now?
29. 29.6 + 2 =
30. 30.? + 5 = 15
31. 31.6 + 8 + 4 =
32. 32.? + 14 = 17
33. 33.Diya has 7 marbles and gets 2 marbles more. How many marbles does Diya have now?
34. 34.? + 1 = 5
35. 35.18 + 1 =
36. 36.2 + 17 =
37. 37.There are 10 green flowers and 6 white flowers. How many flowers are there in all?
38. 38.7 + 13 =
39. 39.? + 10 = 19
40. 40.There are 3 green flowers and 10 blue flowers. How many flowers are there in all?

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