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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 507 · 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. 1.1 + 8 + 8 =
  2. 2.There are 11 blue kites and 8 green kites. How many kites are there in all?
  3. 3.5 + 4 + 1 =
  4. 4.Ishaan has 3 shells and gets 2 shells more. How many shells does Ishaan have now?
  5. 5.2 + 7 + 11 =
  6. 6.2 + ? = 6
  7. 7.17 + 1 =
  8. 8.3 + ? = 18
  9. 9.? + 10 = 17
  10. 10.Karan has 7 balls and gets 10 balls more. How many balls does Karan have now?
  11. 11.Saanvi has 14 shells and gets 6 shells more. How many shells does Saanvi have now?
  12. 12.There are 2 yellow balloons and 6 pink balloons. How many balloons are there in all?
  13. 13.4 + 8 + 3 =
  14. 14.There are 11 green crayons and 6 red crayons. How many crayons are there in all?
  15. 15.10 + 3 =
  16. 16.There are 12 red crayons and 5 pink crayons. How many crayons are there in all?
  17. 17.5 + 6 + 5 =
  18. 18.4 + 1 + 2 =
  19. 19.5 + 6 + 1 =
  20. 20.1 + ? = 3
  21. 21.6 + 2 + 8 =
  22. 22.9 + ? = 15
  23. 23.4 + 7 =
  24. 24.There are 4 red flowers and 3 blue flowers. How many flowers are there in all?
  25. 25.Zoya has 11 balls and gets 5 balls more. How many balls does Zoya have now?
  26. 26.1 + 5 + 2 =
  27. 27.There are 3 white flowers and 11 green flowers. How many flowers are there in all?
  28. 28.4 + 3 + 5 =
  29. 29.18 + 2 =
  30. 30.7 + 1 + 4 =
  31. 31.1 + 2 + 14 =
  32. 32.3 + 7 =
  33. 33.Vivaan has 9 books and gets 9 books more. How many books does Vivaan have now?
  34. 34.5 + 4 + 2 =
  35. 35.Ananya has 8 balloons and gets 11 balloons more. How many balloons does Ananya have now?
  36. 36.8 + 7 + 4 =
  37. 37.6 + ? = 11
  38. 38.7 + 3 + 4 =
  39. 39.There are 11 blue beads and 2 white beads. How many beads are there in all?
  40. 40.7 + 3 + 2 =

Answer key

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

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