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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 584 · 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. 1.13 + ? = 19
  2. 2.4 + 7 + 1 =
  3. 3.3 + 3 + 1 =
  4. 4.2 + 6 + 7 =
  5. 5.There are 6 red balls and 7 pink balls. How many balls are there in all?
  6. 6.2 + ? = 14
  7. 7.3 + 4 + 13 =
  8. 8.Farhan has 4 crayons and gets 1 crayon more. How many crayons does Farhan have now?
  9. 9.1 + 14 =
  10. 10.? + 3 = 7
  11. 11.1 + 5 + 5 =
  12. 12.Ananya has 15 mangoes and gets 3 mangoes more. How many mangoes does Ananya have now?
  13. 13.1 + 5 + 2 =
  14. 14.There are 9 red kites and 5 blue kites. How many kites are there in all?
  15. 15.11 + ? = 18
  16. 16.There are 2 red kites and 3 blue kites. How many kites are there in all?
  17. 17.Rahul has 14 balloons and gets 3 balloons more. How many balloons does Rahul have now?
  18. 18.4 + 6 + 9 =
  19. 19.15 + 2 =
  20. 20.5 + 14 =
  21. 21.? + 1 = 10
  22. 22.Pooja has 7 kites and gets 5 kites more. How many kites does Pooja have now?
  23. 23.2 + ? = 13
  24. 24.5 + 3 =
  25. 25.17 + ? = 20
  26. 26.Kabir has 15 bananas and gets 2 bananas more. How many bananas does Kabir have now?
  27. 27.There are 5 white kites and 7 yellow kites. How many kites are there in all?
  28. 28.17 + 2 =
  29. 29.Rohan has 12 marbles and gets 2 marbles more. How many marbles does Rohan have now?
  30. 30.6 + 8 + 1 =
  31. 31.12 + 4 =
  32. 32.18 + 2 =
  33. 33.6 + ? = 14
  34. 34.5 + 5 + 8 =
  35. 35.Ananya has 4 bananas and gets 16 bananas more. How many bananas does Ananya have now?
  36. 36.10 + 10 =
  37. 37.1 + 1 + 4 =
  38. 38.There are 10 yellow crayons and 8 pink crayons. How many crayons are there in all?
  39. 39.? + 2 = 9
  40. 40.? + 6 = 13

Answer key

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

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