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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 719 · 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 7 blue flowers and 2 green flowers. How many flowers are there in all?
  2. 2.6 + 2 + 1 =
  3. 3.There are 4 white kites and 8 red kites. How many kites are there in all?
  4. 4.12 + 8 =
  5. 5.5 + 1 =
  6. 6.There are 3 red crayons and 4 green crayons. How many crayons are there in all?
  7. 7.Isha has 4 pencils and gets 5 pencils more. How many pencils does Isha have now?
  8. 8.Farhan has 11 balls and gets 8 balls more. How many balls does Farhan have now?
  9. 9.There are 4 blue crayons and 6 white crayons. How many crayons are there in all?
  10. 10.There are 9 pink crayons and 9 yellow crayons. How many crayons are there in all?
  11. 11.Vivaan has 2 bananas and gets 5 bananas more. How many bananas does Vivaan have now?
  12. 12.6 + ? = 7
  13. 13.Aarav has 7 marbles and gets 6 marbles more. How many marbles does Aarav have now?
  14. 14.3 + 6 + 9 =
  15. 15.7 + 3 =
  16. 16.There are 5 yellow flowers and 11 green flowers. How many flowers are there in all?
  17. 17.7 + 7 + 2 =
  18. 18.5 + 13 =
  19. 19.4 + 1 + 4 =
  20. 20.6 + 7 =
  21. 21.5 + ? = 6
  22. 22.There are 10 yellow balloons and 7 blue balloons. How many balloons are there in all?
  23. 23.4 + 6 =
  24. 24.19 + 1 =
  25. 25.There are 6 white flowers and 3 blue flowers. How many flowers are there in all?
  26. 26.2 + 2 =
  27. 27.2 + 5 + 3 =
  28. 28.? + 7 = 18
  29. 29.4 + 7 + 9 =
  30. 30.8 + 2 + 9 =
  31. 31.11 + 5 =
  32. 32.7 + 3 + 1 =
  33. 33.12 + 1 =
  34. 34.5 + 8 + 7 =
  35. 35.There are 2 blue balls and 18 yellow balls. How many balls are there in all?
  36. 36.There are 3 red balls and 7 pink balls. How many balls are there in all?
  37. 37.7 + 7 =
  38. 38.4 + 4 + 1 =
  39. 39.7 + 8 =
  40. 40.3 + 4 + 5 =

Answer key

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

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