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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 210 · 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 10 green flowers and 5 white flowers. How many flowers are there in all?
  2. 2.2 + 13 =
  3. 3.Rahul has 9 bananas and gets 9 bananas more. How many bananas does Rahul have now?
  4. 4.There are 10 pink kites and 3 blue kites. How many kites are there in all?
  5. 5.15 + 5 =
  6. 6.There are 12 yellow balloons and 8 green balloons. How many balloons are there in all?
  7. 7.Vivaan has 10 marbles and gets 3 marbles more. How many marbles does Vivaan have now?
  8. 8.8 + 1 + 6 =
  9. 9.There are 3 white balls and 14 green balls. How many balls are there in all?
  10. 10.? + 10 = 19
  11. 11.There are 11 yellow balloons and 3 red balloons. How many balloons are there in all?
  12. 12.There are 2 green beads and 7 pink beads. How many beads are there in all?
  13. 13.1 + 1 + 5 =
  14. 14.6 + 6 =
  15. 15.6 + 5 =
  16. 16.? + 1 = 9
  17. 17.Farhan has 3 marbles and gets 14 marbles more. How many marbles does Farhan have now?
  18. 18.3 + 6 + 2 =
  19. 19.? + 2 = 15
  20. 20.1 + ? = 10
  21. 21.7 + 5 + 8 =
  22. 22.2 + 4 + 12 =
  23. 23.? + 1 = 16
  24. 24.Rohan has 10 laddoos and gets 1 laddoo more. How many laddoos does Rohan have now?
  25. 25.7 + 1 + 1 =
  26. 26.3 + 8 + 3 =
  27. 27.Joseph has 5 bananas and gets 1 banana more. How many bananas does Joseph have now?
  28. 28.Meera has 14 laddoos and gets 4 laddoos more. How many laddoos does Meera have now?
  29. 29.7 + 6 + 7 =
  30. 30.1 + 7 + 7 =
  31. 31.12 + 7 =
  32. 32.There are 3 yellow crayons and 17 pink crayons. How many crayons are there in all?
  33. 33.Gurpreet has 13 flowers and gets 7 flowers more. How many flowers does Gurpreet have now?
  34. 34.There are 11 white balls and 5 red balls. How many balls are there in all?
  35. 35.3 + 6 + 5 =
  36. 36.2 + 11 =
  37. 37.Manav has 5 balls and gets 9 balls more. How many balls does Manav have now?
  38. 38.1 + ? = 4
  39. 39.6 + ? = 13
  40. 40.17 + ? = 18

Answer key

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

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