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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 351 · 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 5 white crayons and 9 green crayons. How many crayons are there in all?
  2. 2.Riya has 13 kites and gets 3 kites more. How many kites does Riya have now?
  3. 3.10 + 7 =
  4. 4.There are 4 blue beads and 14 yellow beads. How many beads are there in all?
  5. 5.7 + 5 + 8 =
  6. 6.Farhan has 2 flowers and gets 1 flower more. How many flowers does Farhan have now?
  7. 7.10 + 10 =
  8. 8.There are 4 yellow balloons and 2 green balloons. How many balloons are there in all?
  9. 9.6 + 6 + 1 =
  10. 10.Riya has 10 pencils and gets 4 pencils more. How many pencils does Riya have now?
  11. 11.2 + 8 + 2 =
  12. 12.? + 3 = 5
  13. 13.17 + 2 =
  14. 14.4 + 4 + 2 =
  15. 15.? + 9 = 11
  16. 16.There are 9 pink flowers and 9 red flowers. How many flowers are there in all?
  17. 17.Aarav has 5 laddoos and gets 1 laddoo more. How many laddoos does Aarav have now?
  18. 18.Manav has 7 shells and gets 11 shells more. How many shells does Manav have now?
  19. 19.? + 5 = 14
  20. 20.Rohan has 10 balls and gets 1 ball more. How many balls does Rohan have now?
  21. 21.There are 4 white balloons and 7 pink balloons. How many balloons are there in all?
  22. 22.? + 3 = 17
  23. 23.1 + ? = 7
  24. 24.Arjun has 3 mangoes and gets 6 mangoes more. How many mangoes does Arjun have now?
  25. 25.Vivaan has 13 balls and gets 1 ball more. How many balls does Vivaan have now?
  26. 26.1 + ? = 8
  27. 27.3 + 15 =
  28. 28.7 + 10 =
  29. 29.2 + 2 + 13 =
  30. 30.4 + 6 + 3 =
  31. 31.8 + 4 + 3 =
  32. 32.8 + ? = 14
  33. 33.1 + 1 + 8 =
  34. 34.2 + ? = 5
  35. 35.16 + 3 =
  36. 36.16 + 4 =
  37. 37.19 + 1 =
  38. 38.There are 2 blue balloons and 8 yellow balloons. How many balloons are there in all?
  39. 39.Rohan has 15 marbles and gets 1 marble more. How many marbles does Rohan have now?
  40. 40.3 + 4 + 9 =

Answer key

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

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