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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 862 · 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 + 5 + 12 =
  2. 2.8 + 1 + 5 =
  3. 3.There are 12 red flowers and 6 pink flowers. How many flowers are there in all?
  4. 4.3 + ? = 9
  5. 5.Tara has 9 laddoos and gets 4 laddoos more. How many laddoos does Tara have now?
  6. 6.3 + 7 + 3 =
  7. 7.There are 9 blue beads and 7 yellow beads. How many beads are there in all?
  8. 8.Diya has 12 balloons and gets 2 balloons more. How many balloons does Diya have now?
  9. 9.17 + 2 =
  10. 10.? + 3 = 5
  11. 11.12 + 1 =
  12. 12.3 + 5 + 6 =
  13. 13.4 + 1 + 12 =
  14. 14.1 + ? = 12
  15. 15.4 + 4 =
  16. 16.There are 8 white flowers and 6 green flowers. How many flowers are there in all?
  17. 17.There are 3 blue balloons and 13 green balloons. How many balloons are there in all?
  18. 18.Ananya has 12 shells and gets 1 shell more. How many shells does Ananya have now?
  19. 19.6 + 14 =
  20. 20.? + 2 = 12
  21. 21.There are 3 green beads and 3 red beads. How many beads are there in all?
  22. 22.There are 5 white balloons and 8 pink balloons. How many balloons are there in all?
  23. 23.3 + 2 + 6 =
  24. 24.6 + 4 + 6 =
  25. 25.There are 10 green kites and 9 blue kites. How many kites are there in all?
  26. 26.4 + 9 =
  27. 27.There are 9 green beads and 4 red beads. How many beads are there in all?
  28. 28.19 + 1 =
  29. 29.There are 7 pink beads and 10 blue beads. How many beads are there in all?
  30. 30.There are 11 red kites and 6 green kites. How many kites are there in all?
  31. 31.14 + 5 =
  32. 32.2 + 3 + 1 =
  33. 33.There are 4 white balls and 4 pink balls. How many balls are there in all?
  34. 34.3 + 5 =
  35. 35.8 + 4 =
  36. 36.Diya has 9 laddoos and gets 6 laddoos more. How many laddoos does Diya have now?
  37. 37.2 + 5 + 12 =
  38. 38.? + 1 = 7
  39. 39.There are 6 red balls and 14 yellow balls. How many balls are there in all?
  40. 40.8 + 7 + 5 =

Answer key

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

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