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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 814 · 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.There are 6 red crayons and 10 green crayons. How many crayons are there in all?
  2. 2.4 + 2 =
  3. 3.Nisha has 5 balloons and gets 7 balloons more. How many balloons does Nisha have now?
  4. 4.1 + ? = 8
  5. 5.19 + 1 =
  6. 6.There are 4 blue flowers and 4 white flowers. How many flowers are there in all?
  7. 7.5 + ? = 10
  8. 8.There are 9 white flowers and 7 pink flowers. How many flowers are there in all?
  9. 9.11 + 1 =
  10. 10.Riya has 10 shells and gets 5 shells more. How many shells does Riya have now?
  11. 11.Pooja has 3 balls and gets 7 balls more. How many balls does Pooja have now?
  12. 12.5 + 4 + 2 =
  13. 13.3 + 4 + 10 =
  14. 14.Priya has 10 kites and gets 4 kites more. How many kites does Priya have now?
  15. 15.5 + 7 =
  16. 16.3 + 6 + 9 =
  17. 17.Manav has 4 pencils and gets 2 pencils more. How many pencils does Manav have now?
  18. 18.1 + ? = 3
  19. 19.16 + 3 =
  20. 20.1 + ? = 9
  21. 21.8 + ? = 16
  22. 22.There are 10 pink flowers and 10 white flowers. How many flowers are there in all?
  23. 23.There are 12 green balls and 3 red balls. How many balls are there in all?
  24. 24.8 + 4 + 7 =
  25. 25.18 + 2 =
  26. 26.There are 5 red crayons and 2 pink crayons. How many crayons are there in all?
  27. 27.10 + 9 =
  28. 28.There are 8 red balls and 10 yellow balls. How many balls are there in all?
  29. 29.Aarav has 9 crayons and gets 5 crayons more. How many crayons does Aarav have now?
  30. 30.1 + ? = 16
  31. 31.5 + 10 =
  32. 32.There are 3 white beads and 3 blue beads. How many beads are there in all?
  33. 33.8 + 7 + 4 =
  34. 34.1 + ? = 7
  35. 35.Kabir has 11 shells and gets 1 shell more. How many shells does Kabir have now?
  36. 36.Nisha has 13 marbles and gets 3 marbles more. How many marbles does Nisha have now?
  37. 37.Kavya has 2 flowers and gets 15 flowers more. How many flowers does Kavya have now?
  38. 38.? + 11 = 17
  39. 39.2 + ? = 5
  40. 40.3 + 5 =

Answer key

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

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