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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 477 · 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 3 red flowers and 9 pink flowers. How many flowers are there in all?
  2. 2.Diya has 14 crayons and gets 1 crayon more. How many crayons does Diya have now?
  3. 3.Kavya has 15 laddoos and gets 2 laddoos more. How many laddoos does Kavya have now?
  4. 4.1 + ? = 8
  5. 5.Kabir has 7 laddoos and gets 6 laddoos more. How many laddoos does Kabir have now?
  6. 6.7 + 8 + 2 =
  7. 7.18 + 1 =
  8. 8.There are 9 green balloons and 10 blue balloons. How many balloons are there in all?
  9. 9.? + 4 = 14
  10. 10.3 + ? = 11
  11. 11.Zoya has 3 pencils and gets 14 pencils more. How many pencils does Zoya have now?
  12. 12.Kavya has 2 laddoos and gets 1 laddoo more. How many laddoos does Kavya have now?
  13. 13.Gurpreet has 2 books and gets 2 books more. How many books does Gurpreet have now?
  14. 14.? + 2 = 7
  15. 15.? + 2 = 16
  16. 16.7 + 5 + 2 =
  17. 17.18 + 2 =
  18. 18.3 + 2 + 8 =
  19. 19.2 + 2 + 9 =
  20. 20.4 + 4 =
  21. 21.There are 2 pink balloons and 7 red balloons. How many balloons are there in all?
  22. 22.There are 8 pink beads and 10 white beads. How many beads are there in all?
  23. 23.5 + 7 + 7 =
  24. 24.2 + 10 =
  25. 25.There are 5 yellow beads and 5 blue beads. How many beads are there in all?
  26. 26.? + 9 = 20
  27. 27.5 + 13 =
  28. 28.3 + 3 + 8 =
  29. 29.8 + 4 + 8 =
  30. 30.12 + 3 =
  31. 31.? + 10 = 15
  32. 32.Nisha has 14 books and gets 3 books more. How many books does Nisha have now?
  33. 33.Sneha has 10 balloons and gets 5 balloons more. How many balloons does Sneha have now?
  34. 34.There are 3 red kites and 6 green kites. How many kites are there in all?
  35. 35.There are 8 white balls and 10 yellow balls. How many balls are there in all?
  36. 36.Diya has 9 kites and gets 1 kite more. How many kites does Diya have now?
  37. 37.? + 1 = 11
  38. 38.Ananya has 4 flowers and gets 3 flowers more. How many flowers does Ananya have now?
  39. 39.19 + 1 =
  40. 40.5 + ? = 13

Answer key

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

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