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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 607 · 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. 1.1 + ? = 4
  2. 2.Ishaan has 8 laddoos and gets 9 laddoos more. How many laddoos does Ishaan have now?
  3. 3.There are 8 pink kites and 12 green kites. How many kites are there in all?
  4. 4.2 + 1 + 1 =
  5. 5.There are 2 blue balls and 16 red balls. How many balls are there in all?
  6. 6.3 + 1 + 6 =
  7. 7.12 + 4 =
  8. 8.Lakshmi has 12 laddoos and gets 1 laddoo more. How many laddoos does Lakshmi have now?
  9. 9.There are 9 blue crayons and 2 pink crayons. How many crayons are there in all?
  10. 10.Ishaan has 9 books and gets 8 books more. How many books does Ishaan have now?
  11. 11.8 + 5 =
  12. 12.Ananya has 6 bananas and gets 1 banana more. How many bananas does Ananya have now?
  13. 13.There are 9 white flowers and 7 yellow flowers. How many flowers are there in all?
  14. 14.Saanvi has 7 marbles and gets 12 marbles more. How many marbles does Saanvi have now?
  15. 15.There are 2 yellow flowers and 5 green flowers. How many flowers are there in all?
  16. 16.6 + 11 =
  17. 17.7 + 2 + 7 =
  18. 18.There are 4 red balls and 14 blue balls. How many balls are there in all?
  19. 19.There are 10 pink flowers and 7 yellow flowers. How many flowers are there in all?
  20. 20.Arjun has 3 flowers and gets 12 flowers more. How many flowers does Arjun have now?
  21. 21.There are 6 pink balloons and 12 yellow balloons. How many balloons are there in all?
  22. 22.There are 3 red flowers and 4 blue flowers. How many flowers are there in all?
  23. 23.Aditya has 12 marbles and gets 8 marbles more. How many marbles does Aditya have now?
  24. 24.1 + 1 + 17 =
  25. 25.5 + 15 =
  26. 26.There are 11 yellow kites and 9 blue kites. How many kites are there in all?
  27. 27.10 + 8 =
  28. 28.Isha has 11 crayons and gets 6 crayons more. How many crayons does Isha have now?
  29. 29.3 + 5 + 3 =
  30. 30.Kabir has 15 mangoes and gets 3 mangoes more. How many mangoes does Kabir have now?
  31. 31.Saanvi has 13 balloons and gets 5 balloons more. How many balloons does Saanvi have now?
  32. 32.2 + 5 =
  33. 33.? + 8 = 11
  34. 34.There are 4 white flowers and 6 pink flowers. How many flowers are there in all?
  35. 35.? + 14 = 15
  36. 36.8 + 3 + 2 =
  37. 37.16 + 2 =
  38. 38.1 + 6 + 7 =
  39. 39.8 + 5 + 5 =
  40. 40.There are 7 blue crayons and 5 pink crayons. How many crayons are there in all?

Answer key

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

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