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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 442 · 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. 1.3 + 5 + 3 =
  2. 2.4 + ? = 17
  3. 3.1 + ? = 3
  4. 4.There are 6 blue kites and 14 pink kites. How many kites are there in all?
  5. 5.3 + 1 + 14 =
  6. 6.6 + ? = 13
  7. 7.3 + ? = 5
  8. 8.7 + 6 + 2 =
  9. 9.Nisha has 3 bananas and gets 3 bananas more. How many bananas does Nisha have now?
  10. 10.8 + ? = 19
  11. 11.17 + 3 =
  12. 12.2 + 1 + 12 =
  13. 13.13 + 3 =
  14. 14.5 + 1 + 3 =
  15. 15.There are 6 red balloons and 11 pink balloons. How many balloons are there in all?
  16. 16.3 + 2 =
  17. 17.1 + 7 =
  18. 18.Dev has 12 bananas and gets 1 banana more. How many bananas does Dev have now?
  19. 19.10 + 2 =
  20. 20.19 + 1 =
  21. 21.11 + 5 =
  22. 22.4 + 2 + 6 =
  23. 23.Ananya has 9 kites and gets 9 kites more. How many kites does Ananya have now?
  24. 24.16 + 1 =
  25. 25.1 + 3 =
  26. 26.5 + 4 =
  27. 27.Vivaan has 3 books and gets 2 books more. How many books does Vivaan have now?
  28. 28.12 + 1 =
  29. 29.Kabir has 3 kites and gets 6 kites more. How many kites does Kabir have now?
  30. 30.There are 8 red balloons and 6 yellow balloons. How many balloons are there in all?
  31. 31.12 + 5 =
  32. 32.Tara has 6 crayons and gets 11 crayons more. How many crayons does Tara have now?
  33. 33.3 + 3 + 4 =
  34. 34.5 + 8 + 1 =
  35. 35.1 + 5 + 13 =
  36. 36.? + 9 = 15
  37. 37.There are 3 yellow balloons and 15 red balloons. How many balloons are there in all?
  38. 38.Kabir has 12 balloons and gets 2 balloons more. How many balloons does Kabir have now?
  39. 39.Farhan has 8 pencils and gets 7 pencils more. How many pencils does Farhan have now?
  40. 40.10 + 6 =

Answer key

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

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