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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 930 · 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.? + 12 = 17
  2. 2.3 + 1 + 5 =
  3. 3.2 + 3 + 10 =
  4. 4.3 + ? = 4
  5. 5.4 + 16 =
  6. 6.Arjun has 7 balls and gets 12 balls more. How many balls does Arjun have now?
  7. 7.Kabir has 12 marbles and gets 5 marbles more. How many marbles does Kabir have now?
  8. 8.There are 4 blue flowers and 3 red flowers. How many flowers are there in all?
  9. 9.7 + 6 + 3 =
  10. 10.There are 12 red beads and 3 white beads. How many beads are there in all?
  11. 11.4 + 8 =
  12. 12.There are 4 red kites and 15 yellow kites. How many kites are there in all?
  13. 13.5 + 8 + 2 =
  14. 14.There are 4 green balloons and 8 pink balloons. How many balloons are there in all?
  15. 15.There are 5 pink crayons and 6 red crayons. How many crayons are there in all?
  16. 16.16 + 3 =
  17. 17.2 + ? = 5
  18. 18.There are 6 green crayons and 10 pink crayons. How many crayons are there in all?
  19. 19.11 + 8 =
  20. 20.Priya has 5 bananas and gets 6 bananas more. How many bananas does Priya have now?
  21. 21.1 + 2 + 1 =
  22. 22.There are 3 blue balls and 6 yellow balls. How many balls are there in all?
  23. 23.There are 4 blue beads and 15 white beads. How many beads are there in all?
  24. 24.7 + 5 + 7 =
  25. 25.15 + 2 =
  26. 26.? + 9 = 18
  27. 27.3 + 6 + 8 =
  28. 28.2 + 13 =
  29. 29.6 + ? = 11
  30. 30.Joseph has 12 books and gets 4 books more. How many books does Joseph have now?
  31. 31.18 + 2 =
  32. 32.? + 5 = 13
  33. 33.4 + 2 + 7 =
  34. 34.There are 4 yellow crayons and 10 green crayons. How many crayons are there in all?
  35. 35.There are 9 yellow crayons and 9 green crayons. How many crayons are there in all?
  36. 36.19 + 1 =
  37. 37.Kabir has 12 shells and gets 6 shells more. How many shells does Kabir have now?
  38. 38.There are 10 green crayons and 8 blue crayons. How many crayons are there in all?
  39. 39.There are 12 green beads and 4 blue beads. How many beads are there in all?
  40. 40.14 + ? = 19

Answer key

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

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