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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 82 · 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. 1.2 + ? = 8
  2. 2.5 + 9 =
  3. 3.4 + 3 + 12 =
  4. 4.10 + ? = 13
  5. 5.1 + 3 + 7 =
  6. 6.8 + ? = 12
  7. 7.2 + ? = 10
  8. 8.13 + 2 =
  9. 9.4 + 1 + 1 =
  10. 10.18 + 2 =
  11. 11.13 + 4 =
  12. 12.There are 2 green balls and 9 yellow balls. How many balls are there in all?
  13. 13.4 + 16 =
  14. 14.19 + 1 =
  15. 15.5 + 2 + 3 =
  16. 16.There are 4 white flowers and 16 yellow flowers. How many flowers are there in all?
  17. 17.There are 3 yellow beads and 17 green beads. How many beads are there in all?
  18. 18.14 + 1 =
  19. 19.There are 8 white balls and 8 blue balls. How many balls are there in all?
  20. 20.15 + ? = 18
  21. 21.There are 3 blue beads and 15 red beads. How many beads are there in all?
  22. 22.There are 8 red flowers and 7 green flowers. How many flowers are there in all?
  23. 23.9 + ? = 12
  24. 24.11 + 8 =
  25. 25.? + 4 = 6
  26. 26.There are 9 red kites and 6 white kites. How many kites are there in all?
  27. 27.Saanvi has 10 bananas and gets 7 bananas more. How many bananas does Saanvi have now?
  28. 28.1 + 2 =
  29. 29.5 + 7 =
  30. 30.16 + 4 =
  31. 31.4 + 3 + 6 =
  32. 32.? + 2 = 3
  33. 33.4 + ? = 13
  34. 34.There are 5 red crayons and 6 white crayons. How many crayons are there in all?
  35. 35.Zoya has 11 flowers and gets 3 flowers more. How many flowers does Zoya have now?
  36. 36.Isha has 14 mangoes and gets 5 mangoes more. How many mangoes does Isha have now?
  37. 37.7 + 6 + 1 =
  38. 38.5 + 3 + 10 =
  39. 39.6 + 3 =
  40. 40.Riya has 3 pencils and gets 7 pencils more. How many pencils does Riya have now?

Answer key

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

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