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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 678 · 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. 1.9 + 11 =
  2. 2.4 + ? = 13
  3. 3.There are 7 green beads and 10 blue beads. How many beads are there in all?
  4. 4.2 + 2 + 16 =
  5. 5.Riya has 7 balloons and gets 1 balloon more. How many balloons does Riya have now?
  6. 6.19 + 1 =
  7. 7.2 + ? = 8
  8. 8.2 + 7 + 2 =
  9. 9.8 + 12 =
  10. 10.16 + 2 =
  11. 11.Diya has 9 crayons and gets 2 crayons more. How many crayons does Diya have now?
  12. 12.3 + 1 + 13 =
  13. 13.3 + 3 + 6 =
  14. 14.5 + 8 + 2 =
  15. 15.There are 4 white kites and 2 yellow kites. How many kites are there in all?
  16. 16.Kavya has 11 laddoos and gets 1 laddoo more. How many laddoos does Kavya have now?
  17. 17.1 + ? = 13
  18. 18.There are 12 white balloons and 8 blue balloons. How many balloons are there in all?
  19. 19.4 + 3 =
  20. 20.18 + 1 =
  21. 21.Karan has 13 laddoos and gets 5 laddoos more. How many laddoos does Karan have now?
  22. 22.There are 8 red flowers and 5 blue flowers. How many flowers are there in all?
  23. 23.2 + ? = 5
  24. 24.There are 2 white beads and 7 green beads. How many beads are there in all?
  25. 25.Kavya has 14 marbles and gets 2 marbles more. How many marbles does Kavya have now?
  26. 26.There are 9 white beads and 5 yellow beads. How many beads are there in all?
  27. 27.3 + ? = 15
  28. 28.Joseph has 8 mangoes and gets 2 mangoes more. How many mangoes does Joseph have now?
  29. 29.There are 5 pink flowers and 13 green flowers. How many flowers are there in all?
  30. 30.Pooja has 10 bananas and gets 6 bananas more. How many bananas does Pooja have now?
  31. 31.Lakshmi has 11 pencils and gets 3 pencils more. How many pencils does Lakshmi have now?
  32. 32.? + 2 = 8
  33. 33.11 + 5 =
  34. 34.There are 7 green balloons and 8 white balloons. How many balloons are there in all?
  35. 35.There are 12 green kites and 3 blue kites. How many kites are there in all?
  36. 36.? + 2 = 4
  37. 37.There are 8 white kites and 10 green kites. How many kites are there in all?
  38. 38.Dev has 8 bananas and gets 3 bananas more. How many bananas does Dev have now?
  39. 39.There are 9 blue flowers and 6 red flowers. How many flowers are there in all?
  40. 40.2 + 16 =

Answer key

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

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