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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 135 · 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.Rahul has 5 kites and gets 11 kites more. How many kites does Rahul have now?
  2. 2.There are 11 red kites and 4 yellow kites. How many kites are there in all?
  3. 3.6 + 1 =
  4. 4.2 + 1 + 10 =
  5. 5.7 + 2 + 10 =
  6. 6.14 + 5 =
  7. 7.There are 12 white flowers and 6 green flowers. How many flowers are there in all?
  8. 8.Rahul has 8 balls and gets 8 balls more. How many balls does Rahul have now?
  9. 9.2 + 2 + 5 =
  10. 10.? + 4 = 11
  11. 11.There are 11 white flowers and 9 blue flowers. How many flowers are there in all?
  12. 12.Aarav has 7 marbles and gets 4 marbles more. How many marbles does Aarav have now?
  13. 13.Isha has 7 crayons and gets 9 crayons more. How many crayons does Isha have now?
  14. 14.19 + 1 =
  15. 15.13 + 3 =
  16. 16.There are 10 blue kites and 6 pink kites. How many kites are there in all?
  17. 17.6 + 6 + 6 =
  18. 18.Joseph has 12 pencils and gets 8 pencils more. How many pencils does Joseph have now?
  19. 19.2 + ? = 4
  20. 20.4 + ? = 8
  21. 21.? + 1 = 3
  22. 22.5 + 1 =
  23. 23.3 + ? = 9
  24. 24.There are 4 yellow balls and 6 white balls. How many balls are there in all?
  25. 25.3 + ? = 16
  26. 26.There are 10 yellow kites and 6 red kites. How many kites are there in all?
  27. 27.2 + ? = 9
  28. 28.3 + ? = 4
  29. 29.There are 6 yellow crayons and 9 blue crayons. How many crayons are there in all?
  30. 30.6 + ? = 12
  31. 31.There are 2 white crayons and 7 green crayons. How many crayons are there in all?
  32. 32.? + 2 = 15
  33. 33.2 + 14 =
  34. 34.Ishaan has 8 bananas and gets 8 bananas more. How many bananas does Ishaan have now?
  35. 35.Saanvi has 5 balloons and gets 11 balloons more. How many balloons does Saanvi have now?
  36. 36.1 + 1 + 14 =
  37. 37.Lakshmi has 6 crayons and gets 12 crayons more. How many crayons does Lakshmi have now?
  38. 38.1 + 8 + 11 =
  39. 39.There are 3 red beads and 9 green beads. How many beads are there in all?
  40. 40.There are 7 green balls and 3 blue balls. How many balls are there in all?

Answer key

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

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