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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 57 · 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.There are 5 green flowers and 11 red flowers. How many flowers are there in all?
  2. 2.14 + 6 =
  3. 3.? + 1 = 9
  4. 4.There are 4 red kites and 4 pink kites. How many kites are there in all?
  5. 5.16 + 4 =
  6. 6.18 + 2 =
  7. 7.5 + 11 =
  8. 8.? + 7 = 9
  9. 9.There are 8 blue balloons and 8 pink balloons. How many balloons are there in all?
  10. 10.There are 4 pink balloons and 10 blue balloons. How many balloons are there in all?
  11. 11.? + 3 = 6
  12. 12.? + 7 = 17
  13. 13.4 + 5 =
  14. 14.There are 2 blue beads and 6 yellow beads. How many beads are there in all?
  15. 15.9 + 3 =
  16. 16.17 + 2 =
  17. 17.? + 5 = 8
  18. 18.? + 1 = 18
  19. 19.14 + 2 =
  20. 20.There are 5 blue beads and 9 white beads. How many beads are there in all?
  21. 21.7 + ? = 11
  22. 22.There are 10 blue balloons and 10 pink balloons. How many balloons are there in all?
  23. 23.There are 9 yellow balloons and 2 blue balloons. How many balloons are there in all?
  24. 24.Meera has 3 shells and gets 13 shells more. How many shells does Meera have now?
  25. 25.13 + 2 =
  26. 26.Vivaan has 7 flowers and gets 5 flowers more. How many flowers does Vivaan have now?
  27. 27.3 + 5 + 5 =
  28. 28.There are 5 red flowers and 6 pink flowers. How many flowers are there in all?
  29. 29.1 + 1 =
  30. 30.Aarav has 3 bananas and gets 8 bananas more. How many bananas does Aarav have now?
  31. 31.? + 9 = 17
  32. 32.? + 10 = 12
  33. 33.Nisha has 13 balloons and gets 1 balloon more. How many balloons does Nisha have now?
  34. 34.Gurpreet has 3 flowers and gets 4 flowers more. How many flowers does Gurpreet have now?
  35. 35.? + 5 = 10
  36. 36.1 + 8 + 6 =
  37. 37.Kavya has 14 balls and gets 1 ball more. How many balls does Kavya have now?
  38. 38.? + 1 = 14
  39. 39.11 + 2 =
  40. 40.9 + 5 =

Answer key

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

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