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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 5 · 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.There are 3 white flowers and 13 green flowers. How many flowers are there in all?
  2. 2.12 + 4 =
  3. 3.? + 4 = 12
  4. 4.3 + 3 =
  5. 5.Joseph has 9 laddoos and gets 1 laddoo more. How many laddoos does Joseph have now?
  6. 6.There are 3 green kites and 2 pink kites. How many kites are there in all?
  7. 7.13 + 3 =
  8. 8.1 + 3 + 2 =
  9. 9.5 + ? = 10
  10. 10.Kavya has 12 flowers and gets 8 flowers more. How many flowers does Kavya have now?
  11. 11.16 + 2 =
  12. 12.11 + ? = 17
  13. 13.There are 6 blue beads and 9 red beads. How many beads are there in all?
  14. 14.Arjun has 13 marbles and gets 7 marbles more. How many marbles does Arjun have now?
  15. 15.? + 6 = 8
  16. 16.? + 1 = 13
  17. 17.2 + 1 + 15 =
  18. 18.? + 1 = 3
  19. 19.Manav has 2 shells and gets 10 shells more. How many shells does Manav have now?
  20. 20.5 + 5 =
  21. 21.1 + 19 =
  22. 22.2 + 2 + 15 =
  23. 23.There are 4 yellow crayons and 9 red crayons. How many crayons are there in all?
  24. 24.7 + 3 + 10 =
  25. 25.Manav has 15 shells and gets 3 shells more. How many shells does Manav have now?
  26. 26.7 + 8 + 2 =
  27. 27.There are 5 red balloons and 13 yellow balloons. How many balloons are there in all?
  28. 28.Aarav has 15 balloons and gets 1 balloon more. How many balloons does Aarav have now?
  29. 29.7 + ? = 8
  30. 30.17 + 3 =
  31. 31.Lakshmi has 5 balls and gets 12 balls more. How many balls does Lakshmi have now?
  32. 32.1 + 1 + 4 =
  33. 33.2 + ? = 4
  34. 34.There are 3 white kites and 14 red kites. How many kites are there in all?
  35. 35.There are 2 white kites and 12 yellow kites. How many kites are there in all?
  36. 36.16 + 1 =
  37. 37.9 + 5 =
  38. 38.2 + 6 =
  39. 39.12 + 8 =
  40. 40.There are 8 blue kites and 8 pink kites. How many kites are there in all?

Answer key

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

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