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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 22 · 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 9 yellow balls and 4 red balls. How many balls are there in all?
  2. 2.3 + 12 =
  3. 3.Lakshmi has 3 crayons and gets 3 crayons more. How many crayons does Lakshmi have now?
  4. 4.2 + 6 + 1 =
  5. 5.13 + 1 =
  6. 6.1 + 3 + 3 =
  7. 7.2 + 8 + 5 =
  8. 8.Kavya has 5 crayons and gets 15 crayons more. How many crayons does Kavya have now?
  9. 9.Joseph has 11 bananas and gets 9 bananas more. How many bananas does Joseph have now?
  10. 10.Diya has 7 balloons and gets 11 balloons more. How many balloons does Diya have now?
  11. 11.There are 11 red balls and 5 green balls. How many balls are there in all?
  12. 12.5 + 9 =
  13. 13.? + 7 = 16
  14. 14.5 + 1 + 6 =
  15. 15.1 + 4 =
  16. 16.Aarav has 2 balloons and gets 7 balloons more. How many balloons does Aarav have now?
  17. 17.5 + 1 + 14 =
  18. 18.12 + 2 =
  19. 19.6 + 2 =
  20. 20.? + 4 = 18
  21. 21.2 + 3 =
  22. 22.Ananya has 5 flowers and gets 11 flowers more. How many flowers does Ananya have now?
  23. 23.3 + 3 =
  24. 24.16 + 2 =
  25. 25.There are 7 pink beads and 13 blue beads. How many beads are there in all?
  26. 26.3 + ? = 8
  27. 27.There are 8 pink flowers and 4 green flowers. How many flowers are there in all?
  28. 28.2 + 18 =
  29. 29.8 + 8 + 4 =
  30. 30.3 + ? = 15
  31. 31.There are 11 red flowers and 6 pink flowers. How many flowers are there in all?
  32. 32.16 + 3 =
  33. 33.There are 7 red balloons and 13 blue balloons. How many balloons are there in all?
  34. 34.10 + 8 =
  35. 35.Rahul has 11 flowers and gets 8 flowers more. How many flowers does Rahul have now?
  36. 36.6 + 6 + 3 =
  37. 37.3 + ? = 5
  38. 38.1 + 2 + 6 =
  39. 39.Isha has 12 balls and gets 6 balls more. How many balls does Isha have now?
  40. 40.4 + 3 + 10 =

Answer key

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

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