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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 645 · 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.Ananya has 2 pencils and gets 16 pencils more. How many pencils does Ananya have now?
  2. 2.6 + 10 =
  3. 3.2 + 7 + 5 =
  4. 4.Riya has 7 laddoos and gets 6 laddoos more. How many laddoos does Riya have now?
  5. 5.6 + ? = 7
  6. 6.There are 12 blue balls and 4 white balls. How many balls are there in all?
  7. 7.Farhan has 8 marbles and gets 4 marbles more. How many marbles does Farhan have now?
  8. 8.2 + 8 + 7 =
  9. 9.8 + 1 + 7 =
  10. 10.? + 7 = 12
  11. 11.Nisha has 7 balls and gets 1 ball more. How many balls does Nisha have now?
  12. 12.8 + 3 + 2 =
  13. 13.? + 4 = 7
  14. 14.17 + 1 =
  15. 15.5 + 8 + 3 =
  16. 16.There are 9 blue flowers and 5 green flowers. How many flowers are there in all?
  17. 17.6 + 2 + 10 =
  18. 18.14 + 4 =
  19. 19.? + 11 = 12
  20. 20.2 + 7 + 8 =
  21. 21.? + 1 = 18
  22. 22.5 + 2 + 1 =
  23. 23.There are 3 green flowers and 3 yellow flowers. How many flowers are there in all?
  24. 24.6 + 4 + 5 =
  25. 25.1 + 1 + 4 =
  26. 26.1 + 12 =
  27. 27.There are 5 green beads and 3 red beads. How many beads are there in all?
  28. 28.6 + 2 + 12 =
  29. 29.16 + 4 =
  30. 30.4 + 11 =
  31. 31.7 + 8 =
  32. 32.Aarav has 8 bananas and gets 8 bananas more. How many bananas does Aarav have now?
  33. 33.9 + 6 =
  34. 34.There are 9 yellow balls and 2 pink balls. How many balls are there in all?
  35. 35.1 + 2 + 1 =
  36. 36.There are 11 green beads and 2 yellow beads. How many beads are there in all?
  37. 37.Sneha has 4 crayons and gets 1 crayon more. How many crayons does Sneha have now?
  38. 38.There are 2 red balls and 11 green balls. How many balls are there in all?
  39. 39.Vivaan has 6 books and gets 10 books more. How many books does Vivaan have now?
  40. 40.Diya has 9 shells and gets 6 shells more. How many shells does Diya have now?

Answer key

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

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