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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 880 · 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.Karan has 3 marbles and gets 13 marbles more. How many marbles does Karan have now?
  2. 2.4 + 2 + 9 =
  3. 3.4 + 9 =
  4. 4.? + 6 = 18
  5. 5.9 + ? = 15
  6. 6.14 + 2 =
  7. 7.Saanvi has 7 pencils and gets 2 pencils more. How many pencils does Saanvi have now?
  8. 8.There are 5 red kites and 7 yellow kites. How many kites are there in all?
  9. 9.There are 2 green beads and 9 white beads. How many beads are there in all?
  10. 10.5 + 3 + 6 =
  11. 11.5 + 11 =
  12. 12.1 + 8 + 3 =
  13. 13.Meera has 6 kites and gets 1 kite more. How many kites does Meera have now?
  14. 14.13 + 7 =
  15. 15.8 + 11 =
  16. 16.9 + ? = 13
  17. 17.? + 12 = 13
  18. 18.12 + ? = 20
  19. 19.3 + ? = 11
  20. 20.Sneha has 5 balloons and gets 8 balloons more. How many balloons does Sneha have now?
  21. 21.There are 9 red crayons and 5 green crayons. How many crayons are there in all?
  22. 22.1 + 1 + 17 =
  23. 23.There are 6 yellow crayons and 8 red crayons. How many crayons are there in all?
  24. 24.Karan has 4 pencils and gets 1 pencil more. How many pencils does Karan have now?
  25. 25.There are 11 pink crayons and 4 red crayons. How many crayons are there in all?
  26. 26.There are 5 pink flowers and 3 white flowers. How many flowers are there in all?
  27. 27.19 + 1 =
  28. 28.There are 9 yellow crayons and 7 red crayons. How many crayons are there in all?
  29. 29.15 + 5 =
  30. 30.Ananya has 8 balloons and gets 2 balloons more. How many balloons does Ananya have now?
  31. 31.Rohan has 12 balls and gets 2 balls more. How many balls does Rohan have now?
  32. 32.9 + 5 =
  33. 33.3 + ? = 12
  34. 34.There are 3 yellow kites and 10 blue kites. How many kites are there in all?
  35. 35.Isha has 7 pencils and gets 11 pencils more. How many pencils does Isha have now?
  36. 36.3 + 6 + 9 =
  37. 37.There are 4 green balls and 15 pink balls. How many balls are there in all?
  38. 38.2 + ? = 15
  39. 39.16 + 4 =
  40. 40.There are 11 red crayons and 4 green crayons. How many crayons are there in all?

Answer key

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

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