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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 438 · 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.? + 8 = 9
  2. 2.6 + 8 =
  3. 3.13 + 2 =
  4. 4.There are 2 white kites and 12 yellow kites. How many kites are there in all?
  5. 5.? + 4 = 14
  6. 6.2 + 2 =
  7. 7.4 + 13 =
  8. 8.9 + ? = 20
  9. 9.1 + 13 =
  10. 10.19 + 1 =
  11. 11.3 + 2 + 1 =
  12. 12.There are 3 red crayons and 3 blue crayons. How many crayons are there in all?
  13. 13.? + 2 = 6
  14. 14.There are 9 red balls and 2 pink balls. How many balls are there in all?
  15. 15.There are 6 yellow balls and 6 white balls. How many balls are there in all?
  16. 16.9 + 2 =
  17. 17.Manav has 8 laddoos and gets 3 laddoos more. How many laddoos does Manav have now?
  18. 18.2 + 2 + 5 =
  19. 19.Priya has 8 marbles and gets 9 marbles more. How many marbles does Priya have now?
  20. 20.6 + 4 + 1 =
  21. 21.10 + 2 =
  22. 22.6 + 3 + 1 =
  23. 23.2 + 4 =
  24. 24.18 + 1 =
  25. 25.5 + 6 =
  26. 26.Lakshmi has 6 balloons and gets 11 balloons more. How many balloons does Lakshmi have now?
  27. 27.Kabir has 8 balls and gets 9 balls more. How many balls does Kabir have now?
  28. 28.1 + 6 + 4 =
  29. 29.7 + 5 + 4 =
  30. 30.2 + 4 + 2 =
  31. 31.Rohan has 3 balloons and gets 2 balloons more. How many balloons does Rohan have now?
  32. 32.Vivaan has 3 balloons and gets 5 balloons more. How many balloons does Vivaan have now?
  33. 33.? + 13 = 18
  34. 34.Aarav has 6 mangoes and gets 3 mangoes more. How many mangoes does Aarav have now?
  35. 35.12 + 3 =
  36. 36.There are 2 pink flowers and 7 red flowers. How many flowers are there in all?
  37. 37.5 + ? = 7
  38. 38.Sneha has 7 pencils and gets 2 pencils more. How many pencils does Sneha have now?
  39. 39.1 + ? = 3
  40. 40.There are 12 red flowers and 8 yellow flowers. How many flowers are there in all?

Answer key

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

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