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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 394 · 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 + ? = 7
  2. 2.Kabir has 9 books and gets 9 books more. How many books does Kabir have now?
  3. 3.1 + ? = 3
  4. 4.? + 4 = 9
  5. 5.Dev has 9 laddoos and gets 11 laddoos more. How many laddoos does Dev have now?
  6. 6.There are 5 pink crayons and 7 yellow crayons. How many crayons are there in all?
  7. 7.2 + ? = 17
  8. 8.Rohan has 8 bananas and gets 6 bananas more. How many bananas does Rohan have now?
  9. 9.There are 2 white balloons and 9 green balloons. How many balloons are there in all?
  10. 10.18 + 2 =
  11. 11.Kabir has 6 crayons and gets 2 crayons more. How many crayons does Kabir have now?
  12. 12.Tara has 12 crayons and gets 2 crayons more. How many crayons does Tara have now?
  13. 13.? + 5 = 6
  14. 14.There are 12 red balls and 4 white balls. How many balls are there in all?
  15. 15.Arjun has 15 balloons and gets 4 balloons more. How many balloons does Arjun have now?
  16. 16.1 + 8 =
  17. 17.10 + 5 =
  18. 18.There are 10 red crayons and 4 pink crayons. How many crayons are there in all?
  19. 19.Lakshmi has 12 mangoes and gets 3 mangoes more. How many mangoes does Lakshmi have now?
  20. 20.There are 5 green balloons and 8 white balloons. How many balloons are there in all?
  21. 21.? + 2 = 13
  22. 22.There are 3 green balls and 5 red balls. How many balls are there in all?
  23. 23.4 + 6 + 9 =
  24. 24.There are 5 white flowers and 3 yellow flowers. How many flowers are there in all?
  25. 25.6 + 1 + 3 =
  26. 26.There are 12 white crayons and 7 red crayons. How many crayons are there in all?
  27. 27.There are 8 blue balloons and 9 pink balloons. How many balloons are there in all?
  28. 28.3 + ? = 6
  29. 29.8 + 4 + 8 =
  30. 30.? + 4 = 6
  31. 31.4 + 4 + 7 =
  32. 32.Rohan has 2 marbles and gets 4 marbles more. How many marbles does Rohan have now?
  33. 33.2 + 3 =
  34. 34.3 + ? = 13
  35. 35.1 + ? = 13
  36. 36.1 + 9 =
  37. 37.There are 2 yellow beads and 9 green beads. How many beads are there in all?
  38. 38.1 + ? = 5
  39. 39.Pooja has 3 pencils and gets 8 pencils more. How many pencils does Pooja have now?
  40. 40.Vivaan has 10 books and gets 5 books more. How many books does Vivaan have now?

Answer key

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

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