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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 69 · 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 + 15 =
  2. 2.Kabir has 6 laddoos and gets 11 laddoos more. How many laddoos does Kabir have now?
  3. 3.There are 3 yellow balls and 4 pink balls. How many balls are there in all?
  4. 4.5 + 6 =
  5. 5.6 + 8 + 3 =
  6. 6.2 + 5 + 11 =
  7. 7.6 + 1 + 5 =
  8. 8.6 + ? = 10
  9. 9.Zoya has 2 marbles and gets 5 marbles more. How many marbles does Zoya have now?
  10. 10.5 + ? = 10
  11. 11.There are 9 red crayons and 11 yellow crayons. How many crayons are there in all?
  12. 12.? + 7 = 16
  13. 13.3 + ? = 4
  14. 14.8 + ? = 20
  15. 15.2 + 1 + 3 =
  16. 16.Isha has 5 shells and gets 2 shells more. How many shells does Isha have now?
  17. 17.12 + 2 =
  18. 18.11 + 1 =
  19. 19.4 + 2 =
  20. 20.8 + 3 + 7 =
  21. 21.There are 4 blue flowers and 11 white flowers. How many flowers are there in all?
  22. 22.? + 1 = 10
  23. 23.2 + 8 + 7 =
  24. 24.6 + 2 =
  25. 25.3 + 1 + 6 =
  26. 26.5 + 1 + 2 =
  27. 27.1 + 16 =
  28. 28.Sneha has 6 pencils and gets 4 pencils more. How many pencils does Sneha have now?
  29. 29.? + 9 = 10
  30. 30.Pooja has 3 crayons and gets 9 crayons more. How many crayons does Pooja have now?
  31. 31.There are 4 white balloons and 11 blue balloons. How many balloons are there in all?
  32. 32.18 + 2 =
  33. 33.There are 4 white balls and 14 yellow balls. How many balls are there in all?
  34. 34.There are 7 red balloons and 5 white balloons. How many balloons are there in all?
  35. 35.There are 8 red beads and 10 yellow beads. How many beads are there in all?
  36. 36.2 + 8 + 9 =
  37. 37.15 + 2 =
  38. 38.There are 9 red beads and 3 blue beads. How many beads are there in all?
  39. 39.8 + 7 =
  40. 40.Karan has 5 kites and gets 15 kites more. How many kites does Karan have now?

Answer key

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

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