Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 749 · 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 = 3
2. 2.Kavya has 4 balls and gets 5 balls more. How many balls does Kavya have now?
3. 3.? + 13 = 15
4. 4.4 + 2 + 1 =
5. 5.There are 8 red kites and 2 blue kites. How many kites are there in all?
6. 6.8 + 11 =
7. 7.9 + 10 =
8. 8.4 + ? = 9
9. 9.5 + 8 + 1 =
10. 10.There are 10 green balloons and 8 red balloons. How many balloons are there in all?
11. 11.18 + 1 =
12. 12.? + 8 = 12
13. 13.? + 5 = 11
14. 14.1 + ? = 4
15. 15.There are 6 blue balloons and 14 red balloons. How many balloons are there in all?
16. 16.6 + 4 + 4 =
17. 17.There are 7 white kites and 3 blue kites. How many kites are there in all?
18. 18.4 + 1 + 12 =
19. 19.2 + 5 =
20. 20.12 + 4 =
21. 21.16 + 1 =
22. 22.Ishaan has 7 balls and gets 10 balls more. How many balls does Ishaan have now?
23. 23.2 + 6 + 7 =
24. 24.Isha has 8 marbles and gets 3 marbles more. How many marbles does Isha have now?
25. 25.Nisha has 4 shells and gets 7 shells more. How many shells does Nisha have now?
26. 26.There are 2 red beads and 10 yellow beads. How many beads are there in all?
27. 27.3 + ? = 6
28. 28.Tara has 6 shells and gets 7 shells more. How many shells does Tara have now?
29. 29.3 + 6 + 8 =
30. 30.Ananya has 12 crayons and gets 5 crayons more. How many crayons does Ananya have now?
31. 31.1 + ? = 5
32. 32.5 + 1 + 4 =
33. 33.1 + 7 =
34. 34.8 + 7 + 2 =
35. 35.5 + 4 + 6 =
36. 36.2 + ? = 20
37. 37.There are 9 white balloons and 6 pink balloons. How many balloons are there in all?
38. 38.9 + 1 =
39. 39.Rahul has 13 kites and gets 5 kites more. How many kites does Rahul have now?
40. 40.6 + 5 + 8 =

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