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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 702 · 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 + 4 + 2 =
  2. 2.2 + 5 =
  3. 3.There are 12 blue balls and 8 red balls. How many balls are there in all?
  4. 4.Meera has 15 flowers and gets 2 flowers more. How many flowers does Meera have now?
  5. 5.16 + 4 =
  6. 6.? + 1 = 3
  7. 7.2 + 1 + 13 =
  8. 8.7 + ? = 15
  9. 9.6 + 5 =
  10. 10.Ishaan has 5 laddoos and gets 3 laddoos more. How many laddoos does Ishaan have now?
  11. 11.7 + 5 + 7 =
  12. 12.5 + 4 =
  13. 13.Manav has 2 balls and gets 3 balls more. How many balls does Manav have now?
  14. 14.19 + 1 =
  15. 15.2 + ? = 10
  16. 16.Sneha has 4 pencils and gets 7 pencils more. How many pencils does Sneha have now?
  17. 17.There are 6 red crayons and 6 blue crayons. How many crayons are there in all?
  18. 18.8 + 6 =
  19. 19.? + 2 = 4
  20. 20.15 + 5 =
  21. 21.14 + 1 =
  22. 22.Dev has 11 pencils and gets 2 pencils more. How many pencils does Dev have now?
  23. 23.Zoya has 9 marbles and gets 11 marbles more. How many marbles does Zoya have now?
  24. 24.8 + 2 + 8 =
  25. 25.5 + ? = 10
  26. 26.Farhan has 15 shells and gets 1 shell more. How many shells does Farhan have now?
  27. 27.? + 10 = 12
  28. 28.There are 2 green flowers and 5 white flowers. How many flowers are there in all?
  29. 29.5 + ? = 20
  30. 30.11 + ? = 12
  31. 31.10 + ? = 20
  32. 32.1 + 5 + 11 =
  33. 33.3 + 3 + 1 =
  34. 34.? + 3 = 4
  35. 35.Meera has 8 laddoos and gets 5 laddoos more. How many laddoos does Meera have now?
  36. 36.14 + 3 =
  37. 37.3 + 6 + 9 =
  38. 38.5 + 13 =
  39. 39.? + 2 = 18
  40. 40.1 + 4 + 14 =

Answer key

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

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