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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 495 · 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.Riya has 6 pencils and gets 12 pencils more. How many pencils does Riya have now?
  2. 2.Ishaan has 7 marbles and gets 11 marbles more. How many marbles does Ishaan have now?
  3. 3.15 + 2 =
  4. 4.Isha has 4 kites and gets 7 kites more. How many kites does Isha have now?
  5. 5.Aarav has 10 marbles and gets 4 marbles more. How many marbles does Aarav have now?
  6. 6.There are 9 yellow crayons and 3 green crayons. How many crayons are there in all?
  7. 7.4 + 3 =
  8. 8.? + 8 = 10
  9. 9.5 + 7 =
  10. 10.There are 6 white kites and 10 green kites. How many kites are there in all?
  11. 11.There are 7 green balls and 7 white balls. How many balls are there in all?
  12. 12.6 + 4 =
  13. 13.There are 3 yellow balls and 2 pink balls. How many balls are there in all?
  14. 14.? + 14 = 17
  15. 15.19 + 1 =
  16. 16.? + 6 = 20
  17. 17.11 + 7 =
  18. 18.Kavya has 13 kites and gets 2 kites more. How many kites does Kavya have now?
  19. 19.? + 13 = 17
  20. 20.3 + 5 =
  21. 21.1 + 3 + 13 =
  22. 22.There are 10 white flowers and 4 yellow flowers. How many flowers are there in all?
  23. 23.There are 3 blue flowers and 6 red flowers. How many flowers are there in all?
  24. 24.4 + 6 =
  25. 25.There are 12 green crayons and 2 yellow crayons. How many crayons are there in all?
  26. 26.6 + 2 + 6 =
  27. 27.? + 3 = 4
  28. 28.Nisha has 14 kites and gets 2 kites more. How many kites does Nisha have now?
  29. 29.? + 5 = 8
  30. 30.There are 6 blue flowers and 9 pink flowers. How many flowers are there in all?
  31. 31.There are 6 red kites and 3 white kites. How many kites are there in all?
  32. 32.2 + 5 + 1 =
  33. 33.? + 1 = 3
  34. 34.Rohan has 5 marbles and gets 7 marbles more. How many marbles does Rohan have now?
  35. 35.1 + 7 + 10 =
  36. 36.3 + 4 =
  37. 37.? + 15 = 16
  38. 38.? + 5 = 17
  39. 39.2 + 2 + 2 =
  40. 40.9 + ? = 19

Answer key

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

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