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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 736 · 40 sums
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.8 + ? = 10
  2. 2.4 + 7 + 2 =
  3. 3.7 + 4 + 7 =
  4. 4.6 + 8 + 3 =
  5. 5.Aarav has 6 books and gets 14 books more. How many books does Aarav have now?
  6. 6.1 + 11 =
  7. 7.1 + 5 + 6 =
  8. 8.6 + 4 + 5 =
  9. 9.1 + 2 + 7 =
  10. 10.Lakshmi has 5 crayons and gets 1 crayon more. How many crayons does Lakshmi have now?
  11. 11.There are 5 green balloons and 2 red balloons. How many balloons are there in all?
  12. 12.10 + ? = 11
  13. 13.There are 7 white crayons and 3 blue crayons. How many crayons are there in all?
  14. 14.3 + 2 + 2 =
  15. 15.5 + ? = 17
  16. 16.Diya has 4 balls and gets 7 balls more. How many balls does Diya have now?
  17. 17.There are 3 red balloons and 15 pink balloons. How many balloons are there in all?
  18. 18.There are 6 red balls and 2 white balls. How many balls are there in all?
  19. 19.7 + 13 =
  20. 20.Diya has 9 balls and gets 3 balls more. How many balls does Diya have now?
  21. 21.Zoya has 5 laddoos and gets 15 laddoos more. How many laddoos does Zoya have now?
  22. 22.18 + 2 =
  23. 23.There are 5 pink flowers and 13 yellow flowers. How many flowers are there in all?
  24. 24.There are 10 pink kites and 2 white kites. How many kites are there in all?
  25. 25.2 + ? = 18
  26. 26.There are 5 green flowers and 5 pink flowers. How many flowers are there in all?
  27. 27.5 + 4 =
  28. 28.There are 7 white balls and 5 pink balls. How many balls are there in all?
  29. 29.13 + 1 =
  30. 30.5 + ? = 10
  31. 31.? + 13 = 20
  32. 32.4 + 2 + 3 =
  33. 33.There are 2 green flowers and 12 white flowers. How many flowers are there in all?
  34. 34.6 + 7 =
  35. 35.? + 9 = 13
  36. 36.19 + 1 =
  37. 37.Riya has 10 laddoos and gets 8 laddoos more. How many laddoos does Riya have now?
  38. 38.2 + ? = 9
  39. 39.16 + 2 =
  40. 40.There are 10 blue balls and 4 white balls. How many balls are there in all?

Answer key

  1. 2
  2. 13
  3. 18
  4. 17
  5. 20
  6. 12
  7. 12
  8. 15
  9. 10
  10. 6
  11. 7
  12. 1
  13. 10
  14. 7
  15. 12
  16. 11
  17. 18
  18. 8
  19. 20
  20. 12
  21. 20
  22. 20
  23. 18
  24. 12
  25. 16
  26. 10
  27. 9
  28. 12
  29. 14
  30. 5
  31. 7
  32. 9
  33. 14
  34. 13
  35. 4
  36. 20
  37. 18
  38. 7
  39. 18
  40. 14

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