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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 642 · 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.Ananya has 13 books and gets 5 books more. How many books does Ananya have now?
  2. 2.13 + 1 =
  3. 3.4 + 4 + 12 =
  4. 4.? + 2 = 19
  5. 5.There are 5 red crayons and 12 green crayons. How many crayons are there in all?
  6. 6.18 + 2 =
  7. 7.There are 2 yellow balloons and 14 blue balloons. How many balloons are there in all?
  8. 8.16 + 2 =
  9. 9.1 + 6 + 11 =
  10. 10.There are 8 red flowers and 3 blue flowers. How many flowers are there in all?
  11. 11.2 + 5 + 10 =
  12. 12.3 + 1 + 13 =
  13. 13.2 + 6 + 9 =
  14. 14.10 + 9 =
  15. 15.There are 8 green balls and 10 red balls. How many balls are there in all?
  16. 16.1 + ? = 7
  17. 17.There are 11 red crayons and 2 blue crayons. How many crayons are there in all?
  18. 18.There are 11 red kites and 8 blue kites. How many kites are there in all?
  19. 19.11 + 6 =
  20. 20.Nisha has 13 balls and gets 5 balls more. How many balls does Nisha have now?
  21. 21.6 + 11 =
  22. 22.6 + 8 + 4 =
  23. 23.Arjun has 13 shells and gets 6 shells more. How many shells does Arjun have now?
  24. 24.Manav has 13 balls and gets 2 balls more. How many balls does Manav have now?
  25. 25.There are 5 blue flowers and 5 pink flowers. How many flowers are there in all?
  26. 26.19 + 1 =
  27. 27.7 + 4 + 6 =
  28. 28.4 + 1 + 2 =
  29. 29.13 + 5 =
  30. 30.1 + ? = 19
  31. 31.Riya has 15 shells and gets 2 shells more. How many shells does Riya have now?
  32. 32.Meera has 12 laddoos and gets 2 laddoos more. How many laddoos does Meera have now?
  33. 33.2 + ? = 5
  34. 34.There are 10 yellow balls and 6 white balls. How many balls are there in all?
  35. 35.12 + 2 =
  36. 36.There are 4 blue flowers and 11 white flowers. How many flowers are there in all?
  37. 37.? + 6 = 15
  38. 38.Ananya has 4 mangoes and gets 9 mangoes more. How many mangoes does Ananya have now?
  39. 39.1 + ? = 4
  40. 40.There are 9 yellow flowers and 11 green flowers. How many flowers are there in all?

Answer key

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

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