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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 752 · 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. 1.6 + ? = 7
  2. 2.There are 9 blue crayons and 3 white crayons. How many crayons are there in all?
  3. 3.There are 5 yellow crayons and 5 white crayons. How many crayons are there in all?
  4. 4.Priya has 9 marbles and gets 4 marbles more. How many marbles does Priya have now?
  5. 5.Diya has 7 flowers and gets 6 flowers more. How many flowers does Diya have now?
  6. 6.14 + 6 =
  7. 7.4 + 5 =
  8. 8.2 + ? = 19
  9. 9.12 + 7 =
  10. 10.2 + 2 =
  11. 11.6 + 14 =
  12. 12.10 + 3 =
  13. 13.3 + 7 + 10 =
  14. 14.4 + ? = 8
  15. 15.10 + 2 =
  16. 16.6 + 8 + 5 =
  17. 17.There are 3 green kites and 12 white kites. How many kites are there in all?
  18. 18.? + 6 = 11
  19. 19.? + 4 = 5
  20. 20.4 + 8 + 2 =
  21. 21.5 + 6 + 2 =
  22. 22.1 + 2 =
  23. 23.7 + ? = 19
  24. 24.Riya has 9 books and gets 7 books more. How many books does Riya have now?
  25. 25.8 + 8 =
  26. 26.5 + 4 =
  27. 27.3 + 2 =
  28. 28.7 + 5 =
  29. 29.19 + 1 =
  30. 30.10 + 10 =
  31. 31.5 + 4 + 1 =
  32. 32.2 + 2 + 4 =
  33. 33.6 + 13 =
  34. 34.Manav has 9 laddoos and gets 6 laddoos more. How many laddoos does Manav have now?
  35. 35.? + 12 = 13
  36. 36.There are 11 white flowers and 2 red flowers. How many flowers are there in all?
  37. 37.There are 8 red balls and 4 yellow balls. How many balls are there in all?
  38. 38.There are 10 white beads and 3 pink beads. How many beads are there in all?
  39. 39.Saanvi has 8 books and gets 1 book more. How many books does Saanvi have now?
  40. 40.There are 8 red balls and 10 white balls. How many balls are there in all?

Answer key

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

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