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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 684 · 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. 1.5 + 1 =
  2. 2.Manav has 11 bananas and gets 7 bananas more. How many bananas does Manav have now?
  3. 3.6 + 6 + 5 =
  4. 4.1 + 13 =
  5. 5.5 + ? = 9
  6. 6.1 + 6 + 11 =
  7. 7.10 + 9 =
  8. 8.There are 3 blue balloons and 16 red balloons. How many balloons are there in all?
  9. 9.Saanvi has 11 balls and gets 4 balls more. How many balls does Saanvi have now?
  10. 10.There are 10 red flowers and 2 blue flowers. How many flowers are there in all?
  11. 11.There are 8 green balloons and 10 white balloons. How many balloons are there in all?
  12. 12.14 + 5 =
  13. 13.There are 7 white crayons and 4 green crayons. How many crayons are there in all?
  14. 14.? + 3 = 11
  15. 15.2 + ? = 6
  16. 16.There are 4 white balls and 10 blue balls. How many balls are there in all?
  17. 17.Isha has 7 bananas and gets 13 bananas more. How many bananas does Isha have now?
  18. 18.18 + 2 =
  19. 19.1 + 3 + 1 =
  20. 20.? + 2 = 3
  21. 21.? + 9 = 14
  22. 22.3 + 13 =
  23. 23.4 + 13 =
  24. 24.Aarav has 13 flowers and gets 2 flowers more. How many flowers does Aarav have now?
  25. 25.2 + 7 + 5 =
  26. 26.There are 2 red balloons and 12 white balloons. How many balloons are there in all?
  27. 27.Vivaan has 13 books and gets 4 books more. How many books does Vivaan have now?
  28. 28.19 + 1 =
  29. 29.7 + 5 + 5 =
  30. 30.10 + 3 =
  31. 31.1 + 14 =
  32. 32.There are 10 red kites and 3 blue kites. How many kites are there in all?
  33. 33.7 + 2 + 1 =
  34. 34.? + 3 = 10
  35. 35.7 + 4 =
  36. 36.5 + 6 + 2 =
  37. 37.Aarav has 4 pencils and gets 3 pencils more. How many pencils does Aarav have now?
  38. 38.5 + ? = 7
  39. 39.6 + 2 + 1 =
  40. 40.There are 12 blue flowers and 2 white flowers. How many flowers are there in all?

Answer key

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

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