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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 947 · 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. 1.3 + 4 + 3 =
  2. 2.8 + 2 + 10 =
  3. 3.10 + ? = 20
  4. 4.Saanvi has 13 books and gets 1 book more. How many books does Saanvi have now?
  5. 5.7 + 13 =
  6. 6.There are 4 white beads and 7 blue beads. How many beads are there in all?
  7. 7.8 + 6 + 6 =
  8. 8.4 + 15 =
  9. 9.1 + 5 + 11 =
  10. 10.8 + 3 + 2 =
  11. 11.3 + 6 =
  12. 12.10 + 1 =
  13. 13.Rohan has 6 balls and gets 7 balls more. How many balls does Rohan have now?
  14. 14.1 + 6 + 5 =
  15. 15.There are 3 red crayons and 9 pink crayons. How many crayons are there in all?
  16. 16.Riya has 7 shells and gets 12 shells more. How many shells does Riya have now?
  17. 17.There are 10 red beads and 9 yellow beads. How many beads are there in all?
  18. 18.? + 1 = 5
  19. 19.6 + 14 =
  20. 20.3 + 16 =
  21. 21.There are 5 white beads and 15 blue beads. How many beads are there in all?
  22. 22.1 + 6 + 12 =
  23. 23.13 + 2 =
  24. 24.1 + ? = 4
  25. 25.2 + ? = 3
  26. 26.16 + 1 =
  27. 27.5 + 5 + 7 =
  28. 28.Aarav has 13 pencils and gets 2 pencils more. How many pencils does Aarav have now?
  29. 29.Priya has 4 balloons and gets 2 balloons more. How many balloons does Priya have now?
  30. 30.9 + ? = 13
  31. 31.4 + ? = 19
  32. 32.6 + 4 + 10 =
  33. 33.There are 4 blue kites and 16 green kites. How many kites are there in all?
  34. 34.There are 12 yellow balloons and 2 white balloons. How many balloons are there in all?
  35. 35.8 + 5 =
  36. 36.Aditya has 6 laddoos and gets 10 laddoos more. How many laddoos does Aditya have now?
  37. 37.7 + 4 + 1 =
  38. 38.18 + ? = 20
  39. 39.There are 3 red crayons and 6 white crayons. How many crayons are there in all?
  40. 40.There are 3 blue flowers and 8 yellow flowers. How many flowers are there in all?

Answer key

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

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