Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 574 · 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.Priya has 2 mangoes and gets 4 mangoes more. How many mangoes does Priya have now?
2. 2.Aarav has 14 laddoos and gets 4 laddoos more. How many laddoos does Aarav have now?
3. 3.8 + 5 + 7 =
4. 4.4 + 7 + 8 =
5. 5.9 + 8 =
6. 6.There are 5 red balls and 3 green balls. How many balls are there in all?
7. 7.3 + ? = 9
8. 8.Farhan has 11 laddoos and gets 3 laddoos more. How many laddoos does Farhan have now?
9. 9.Rohan has 11 bananas and gets 7 bananas more. How many bananas does Rohan have now?
10. 10.5 + 1 + 13 =
11. 11.8 + ? = 20
12. 12.2 + 3 + 13 =
13. 13.3 + ? = 6
14. 14.6 + 2 + 5 =
15. 15.4 + ? = 5
16. 16.10 + 4 =
17. 17.4 + 1 + 13 =
18. 18.2 + 3 =
19. 19.3 + 16 =
20. 20.5 + 3 =
21. 21.4 + 8 + 2 =
22. 22.19 + 1 =
23. 23.? + 7 = 8
24. 24.? + 2 = 3
25. 25.11 + 7 =
26. 26.Ishaan has 11 balls and gets 5 balls more. How many balls does Ishaan have now?
27. 27.5 + 13 =
28. 28.Lakshmi has 7 books and gets 2 books more. How many books does Lakshmi have now?
29. 29.16 + 1 =
30. 30.There are 9 pink kites and 8 white kites. How many kites are there in all?
31. 31.There are 4 red crayons and 11 white crayons. How many crayons are there in all?
32. 32.18 + 1 =
33. 33.6 + 1 + 10 =
34. 34.9 + 3 =
35. 35.8 + 3 + 4 =
36. 36.11 + 3 =
37. 37.Saanvi has 15 mangoes and gets 2 mangoes more. How many mangoes does Saanvi have now?
38. 38.10 + 1 =
39. 39.There are 2 red kites and 11 white kites. How many kites are there in all?
40. 40.? + 8 = 9

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