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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 805 · 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. 1.14 + 5 =
  2. 2.? + 9 = 12
  3. 3.There are 10 white balloons and 9 red balloons. How many balloons are there in all?
  4. 4.4 + 2 =
  5. 5.Aditya has 7 marbles and gets 5 marbles more. How many marbles does Aditya have now?
  6. 6.6 + 1 + 1 =
  7. 7.Sneha has 15 shells and gets 5 shells more. How many shells does Sneha have now?
  8. 8.Aarav has 9 crayons and gets 9 crayons more. How many crayons does Aarav have now?
  9. 9.2 + 2 + 2 =
  10. 10.14 + 2 =
  11. 11.Aditya has 15 balloons and gets 4 balloons more. How many balloons does Aditya have now?
  12. 12.14 + 6 =
  13. 13.17 + 1 =
  14. 14.There are 3 blue beads and 11 yellow beads. How many beads are there in all?
  15. 15.9 + ? = 17
  16. 16.4 + 1 + 7 =
  17. 17.Joseph has 10 flowers and gets 1 flower more. How many flowers does Joseph have now?
  18. 18.2 + 8 =
  19. 19.There are 2 red flowers and 14 pink flowers. How many flowers are there in all?
  20. 20.Arjun has 3 balloons and gets 13 balloons more. How many balloons does Arjun have now?
  21. 21.There are 10 yellow kites and 10 green kites. How many kites are there in all?
  22. 22.2 + 17 =
  23. 23.8 + 2 + 8 =
  24. 24.9 + 10 =
  25. 25.There are 4 yellow flowers and 5 pink flowers. How many flowers are there in all?
  26. 26.15 + 3 =
  27. 27.Ananya has 13 bananas and gets 2 bananas more. How many bananas does Ananya have now?
  28. 28.? + 5 = 18
  29. 29.There are 12 green flowers and 8 white flowers. How many flowers are there in all?
  30. 30.There are 2 green balloons and 18 pink balloons. How many balloons are there in all?
  31. 31.1 + 8 + 8 =
  32. 32.8 + 5 + 4 =
  33. 33.? + 1 = 3
  34. 34.2 + ? = 3
  35. 35.There are 7 white balls and 4 blue balls. How many balls are there in all?
  36. 36.4 + 7 + 1 =
  37. 37.1 + 7 + 7 =
  38. 38.Kabir has 14 flowers and gets 4 flowers more. How many flowers does Kabir have now?
  39. 39.There are 3 blue kites and 7 pink kites. How many kites are there in all?
  40. 40.5 + 4 + 4 =

Answer key

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

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