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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 383 · 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.Kabir has 12 bananas and gets 3 bananas more. How many bananas does Kabir have now?
  2. 2.18 + 2 =
  3. 3.4 + 6 + 10 =
  4. 4.There are 5 blue kites and 5 red kites. How many kites are there in all?
  5. 5.14 + ? = 17
  6. 6.6 + ? = 17
  7. 7.4 + 2 + 3 =
  8. 8.12 + 2 =
  9. 9.3 + 7 + 6 =
  10. 10.There are 7 green balloons and 10 white balloons. How many balloons are there in all?
  11. 11.There are 3 pink flowers and 7 white flowers. How many flowers are there in all?
  12. 12.4 + 5 =
  13. 13.1 + 18 =
  14. 14.11 + 3 =
  15. 15.4 + 12 =
  16. 16.Priya has 15 balls and gets 1 ball more. How many balls does Priya have now?
  17. 17.9 + 6 =
  18. 18.There are 5 red kites and 4 green kites. How many kites are there in all?
  19. 19.8 + 8 + 1 =
  20. 20.15 + 5 =
  21. 21.There are 7 yellow balloons and 11 white balloons. How many balloons are there in all?
  22. 22.1 + 8 + 5 =
  23. 23.Nisha has 7 crayons and gets 13 crayons more. How many crayons does Nisha have now?
  24. 24.5 + 4 =
  25. 25.There are 5 blue kites and 11 red kites. How many kites are there in all?
  26. 26.There are 3 green balloons and 3 white balloons. How many balloons are there in all?
  27. 27.There are 12 yellow beads and 2 red beads. How many beads are there in all?
  28. 28.2 + 8 + 3 =
  29. 29.11 + 8 =
  30. 30.17 + 3 =
  31. 31.2 + ? = 16
  32. 32.There are 7 blue flowers and 6 red flowers. How many flowers are there in all?
  33. 33.4 + 2 =
  34. 34.18 + ? = 20
  35. 35.Zoya has 11 pencils and gets 1 pencil more. How many pencils does Zoya have now?
  36. 36.? + 4 = 17
  37. 37.5 + 8 =
  38. 38.8 + 5 + 2 =
  39. 39.There are 8 red kites and 5 white kites. How many kites are there in all?
  40. 40.12 + 3 =

Answer key

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

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