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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 649 · 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 12 yellow crayons and 5 green crayons. How many crayons are there in all?
  2. 2.There are 6 white beads and 2 blue beads. How many beads are there in all?
  3. 3.Vivaan has 5 pencils and gets 10 pencils more. How many pencils does Vivaan have now?
  4. 4.18 + ? = 20
  5. 5.10 + 1 =
  6. 6.8 + 3 + 3 =
  7. 7.Saanvi has 4 flowers and gets 9 flowers more. How many flowers does Saanvi have now?
  8. 8.18 + 2 =
  9. 9.Zoya has 13 flowers and gets 2 flowers more. How many flowers does Zoya have now?
  10. 10.There are 3 red flowers and 14 pink flowers. How many flowers are there in all?
  11. 11.Priya has 8 crayons and gets 9 crayons more. How many crayons does Priya have now?
  12. 12.Nisha has 15 balloons and gets 2 balloons more. How many balloons does Nisha have now?
  13. 13.14 + 1 =
  14. 14.Karan has 9 bananas and gets 10 bananas more. How many bananas does Karan have now?
  15. 15.2 + ? = 17
  16. 16.There are 2 red balloons and 9 white balloons. How many balloons are there in all?
  17. 17.3 + ? = 5
  18. 18.? + 2 = 7
  19. 19.19 + 1 =
  20. 20.There are 2 blue balls and 2 white balls. How many balls are there in all?
  21. 21.? + 4 = 11
  22. 22.10 + ? = 13
  23. 23.5 + 5 + 2 =
  24. 24.There are 9 blue beads and 8 yellow beads. How many beads are there in all?
  25. 25.? + 1 = 4
  26. 26.4 + 5 + 7 =
  27. 27.Kabir has 15 bananas and gets 5 bananas more. How many bananas does Kabir have now?
  28. 28.13 + 2 =
  29. 29.4 + 2 + 5 =
  30. 30.2 + ? = 9
  31. 31.2 + ? = 3
  32. 32.6 + 9 =
  33. 33.7 + ? = 14
  34. 34.1 + 2 + 16 =
  35. 35.3 + ? = 19
  36. 36.1 + 2 =
  37. 37.1 + 8 + 11 =
  38. 38.Vivaan has 12 pencils and gets 5 pencils more. How many pencils does Vivaan have now?
  39. 39.16 + ? = 18
  40. 40.16 + 1 =

Answer key

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

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