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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 177 · 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.Meera has 2 kites and gets 3 kites more. How many kites does Meera have now?
  2. 2.? + 1 = 4
  3. 3.4 + ? = 16
  4. 4.There are 7 pink crayons and 11 blue crayons. How many crayons are there in all?
  5. 5.There are 3 red flowers and 8 white flowers. How many flowers are there in all?
  6. 6.13 + 7 =
  7. 7.8 + 5 =
  8. 8.5 + 1 + 6 =
  9. 9.1 + ? = 3
  10. 10.3 + ? = 6
  11. 11.17 + 1 =
  12. 12.17 + 2 =
  13. 13.1 + 1 + 12 =
  14. 14.There are 10 white balloons and 2 blue balloons. How many balloons are there in all?
  15. 15.3 + 4 + 3 =
  16. 16.6 + 1 =
  17. 17.2 + 15 =
  18. 18.? + 12 = 15
  19. 19.? + 11 = 13
  20. 20.There are 10 green balloons and 8 yellow balloons. How many balloons are there in all?
  21. 21.Aarav has 14 laddoos and gets 1 laddoo more. How many laddoos does Aarav have now?
  22. 22.3 + 3 + 13 =
  23. 23.1 + 8 + 2 =
  24. 24.8 + ? = 13
  25. 25.Vivaan has 7 pencils and gets 13 pencils more. How many pencils does Vivaan have now?
  26. 26.? + 2 = 3
  27. 27.5 + 5 =
  28. 28.8 + ? = 18
  29. 29.Saanvi has 8 laddoos and gets 12 laddoos more. How many laddoos does Saanvi have now?
  30. 30.5 + 1 + 5 =
  31. 31.4 + ? = 5
  32. 32.There are 11 red beads and 9 green beads. How many beads are there in all?
  33. 33.Ananya has 3 bananas and gets 4 bananas more. How many bananas does Ananya have now?
  34. 34.Farhan has 5 balloons and gets 10 balloons more. How many balloons does Farhan have now?
  35. 35.11 + 6 =
  36. 36.Aditya has 3 mangoes and gets 3 mangoes more. How many mangoes does Aditya have now?
  37. 37.15 + 2 =
  38. 38.There are 11 white beads and 9 yellow beads. How many beads are there in all?
  39. 39.2 + 16 =
  40. 40.4 + 1 + 11 =

Answer key

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

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