Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 191 · 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 + 1 =
2. 2.3 + ? = 5
3. 3.13 + 3 =
4. 4.2 + ? = 8
5. 5.3 + 4 =
6. 6.6 + 5 =
7. 7.There are 8 white beads and 10 pink beads. How many beads are there in all?
8. 8.Joseph has 8 balls and gets 5 balls more. How many balls does Joseph have now?
9. 9.1 + 7 + 6 =
10. 10.Rohan has 3 mangoes and gets 9 mangoes more. How many mangoes does Rohan have now?
11. 11.8 + 1 + 6 =
12. 12.There are 10 green flowers and 3 pink flowers. How many flowers are there in all?
13. 13.There are 11 red crayons and 7 green crayons. How many crayons are there in all?
14. 14.? + 5 = 7
15. 15.5 + 6 =
16. 16.Karan has 7 books and gets 11 books more. How many books does Karan have now?
17. 17.6 + 6 =
18. 18.3 + 1 + 14 =
19. 19.4 + 6 + 8 =
20. 20.There are 3 pink flowers and 5 white flowers. How many flowers are there in all?
21. 21.2 + 14 =
22. 22.14 + 1 =
23. 23.Rahul has 7 crayons and gets 9 crayons more. How many crayons does Rahul have now?
24. 24.5 + ? = 20
25. 25.There are 12 yellow beads and 7 white beads. How many beads are there in all?
26. 26.Diya has 5 mangoes and gets 9 mangoes more. How many mangoes does Diya have now?
27. 27.There are 11 pink balloons and 4 red balloons. How many balloons are there in all?
28. 28.3 + ? = 8
29. 29.1 + 8 =
30. 30.5 + 6 + 9 =
31. 31.19 + 1 =
32. 32.1 + 8 + 5 =
33. 33.4 + ? = 5
34. 34.7 + 1 + 10 =
35. 35.There are 3 white kites and 3 blue kites. How many kites are there in all?
36. 36.11 + 8 =
37. 37.18 + 1 =
38. 38.There are 5 blue beads and 10 white beads. How many beads are there in all?
39. 39.16 + 2 =
40. 40.12 + 1 =

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