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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 101 · 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 + ? = 4
  2. 2.? + 3 = 4
  3. 3.Ananya has 15 balls and gets 5 balls more. How many balls does Ananya have now?
  4. 4.1 + 6 + 9 =
  5. 5.There are 3 green beads and 7 yellow beads. How many beads are there in all?
  6. 6.5 + 8 =
  7. 7.There are 4 green crayons and 14 yellow crayons. How many crayons are there in all?
  8. 8.2 + 16 =
  9. 9.? + 2 = 17
  10. 10.18 + ? = 20
  11. 11.8 + 1 + 2 =
  12. 12.12 + 3 =
  13. 13.17 + ? = 19
  14. 14.There are 6 blue balloons and 6 yellow balloons. How many balloons are there in all?
  15. 15.1 + ? = 19
  16. 16.1 + 8 + 11 =
  17. 17.5 + 1 + 10 =
  18. 18.Dev has 12 balloons and gets 2 balloons more. How many balloons does Dev have now?
  19. 19.There are 3 pink kites and 14 green kites. How many kites are there in all?
  20. 20.4 + ? = 5
  21. 21.Farhan has 7 pencils and gets 7 pencils more. How many pencils does Farhan have now?
  22. 22.? + 8 = 9
  23. 23.There are 4 yellow kites and 11 red kites. How many kites are there in all?
  24. 24.7 + 8 + 2 =
  25. 25.There are 9 white beads and 5 red beads. How many beads are there in all?
  26. 26.Zoya has 8 balloons and gets 5 balloons more. How many balloons does Zoya have now?
  27. 27.1 + 12 =
  28. 28.Karan has 2 kites and gets 9 kites more. How many kites does Karan have now?
  29. 29.6 + 2 =
  30. 30.Kavya has 9 bananas and gets 8 bananas more. How many bananas does Kavya have now?
  31. 31.1 + 2 + 2 =
  32. 32.6 + ? = 7
  33. 33.19 + 1 =
  34. 34.11 + 5 =
  35. 35.3 + 3 + 4 =
  36. 36.Aarav has 5 crayons and gets 9 crayons more. How many crayons does Aarav have now?
  37. 37.? + 8 = 10
  38. 38.7 + 8 =
  39. 39.1 + 19 =
  40. 40.There are 6 yellow kites and 2 white kites. How many kites are there in all?

Answer key

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

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