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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 76 · 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. 1.3 + ? = 8
  2. 2.Farhan has 7 shells and gets 10 shells more. How many shells does Farhan have now?
  3. 3.There are 9 red flowers and 9 yellow flowers. How many flowers are there in all?
  4. 4.3 + 3 =
  5. 5.2 + 4 + 3 =
  6. 6.19 + 1 =
  7. 7.Riya has 9 books and gets 2 books more. How many books does Riya have now?
  8. 8.7 + 1 =
  9. 9.1 + 6 =
  10. 10.There are 3 red beads and 4 yellow beads. How many beads are there in all?
  11. 11.14 + 6 =
  12. 12.8 + 5 + 5 =
  13. 13.14 + 5 =
  14. 14.8 + 4 =
  15. 15.7 + 12 =
  16. 16.10 + 7 =
  17. 17.5 + 2 =
  18. 18.Kabir has 12 flowers and gets 5 flowers more. How many flowers does Kabir have now?
  19. 19.14 + 2 =
  20. 20.7 + 2 + 8 =
  21. 21.There are 10 red kites and 5 green kites. How many kites are there in all?
  22. 22.There are 2 green balloons and 17 white balloons. How many balloons are there in all?
  23. 23.6 + 7 + 3 =
  24. 24.There are 12 yellow flowers and 8 green flowers. How many flowers are there in all?
  25. 25.? + 3 = 16
  26. 26.Gurpreet has 8 flowers and gets 10 flowers more. How many flowers does Gurpreet have now?
  27. 27.3 + 6 + 4 =
  28. 28.4 + 4 + 11 =
  29. 29.3 + 2 =
  30. 30.7 + 1 + 2 =
  31. 31.1 + 10 =
  32. 32.There are 3 yellow crayons and 7 red crayons. How many crayons are there in all?
  33. 33.2 + 2 + 5 =
  34. 34.Priya has 7 crayons and gets 3 crayons more. How many crayons does Priya have now?
  35. 35.7 + 3 + 9 =
  36. 36.Saanvi has 4 balls and gets 10 balls more. How many balls does Saanvi have now?
  37. 37.Diya has 9 kites and gets 8 kites more. How many kites does Diya have now?
  38. 38.? + 4 = 5
  39. 39.1 + 5 + 6 =
  40. 40.? + 2 = 3

Answer key

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

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