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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 959 · 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.? + 6 = 7
  2. 2.? + 12 = 13
  3. 3.There are 12 pink beads and 6 blue beads. How many beads are there in all?
  4. 4.There are 9 white beads and 11 green beads. How many beads are there in all?
  5. 5.There are 6 red balls and 14 white balls. How many balls are there in all?
  6. 6.? + 2 = 9
  7. 7.3 + 15 =
  8. 8.3 + 5 + 12 =
  9. 9.4 + 5 + 5 =
  10. 10.Dev has 11 books and gets 9 books more. How many books does Dev have now?
  11. 11.There are 4 yellow flowers and 13 red flowers. How many flowers are there in all?
  12. 12.Farhan has 4 shells and gets 12 shells more. How many shells does Farhan have now?
  13. 13.7 + 2 + 7 =
  14. 14.5 + 7 + 6 =
  15. 15.9 + 3 =
  16. 16.3 + 9 =
  17. 17.1 + ? = 6
  18. 18.Ishaan has 12 crayons and gets 8 crayons more. How many crayons does Ishaan have now?
  19. 19.14 + 2 =
  20. 20.Joseph has 9 balloons and gets 2 balloons more. How many balloons does Joseph have now?
  21. 21.Dev has 5 mangoes and gets 14 mangoes more. How many mangoes does Dev have now?
  22. 22.Sneha has 5 books and gets 14 books more. How many books does Sneha have now?
  23. 23.4 + ? = 5
  24. 24.There are 4 red crayons and 3 blue crayons. How many crayons are there in all?
  25. 25.Pooja has 14 books and gets 2 books more. How many books does Pooja have now?
  26. 26.Kabir has 15 bananas and gets 2 bananas more. How many bananas does Kabir have now?
  27. 27.19 + 1 =
  28. 28.18 + 1 =
  29. 29.4 + 7 + 6 =
  30. 30.14 + 4 =
  31. 31.3 + 3 + 3 =
  32. 32.Arjun has 6 bananas and gets 8 bananas more. How many bananas does Arjun have now?
  33. 33.There are 3 red crayons and 10 blue crayons. How many crayons are there in all?
  34. 34.? + 8 = 10
  35. 35.Farhan has 9 pencils and gets 3 pencils more. How many pencils does Farhan have now?
  36. 36.There are 5 pink balls and 2 white balls. How many balls are there in all?
  37. 37.There are 9 green beads and 8 yellow beads. How many beads are there in all?
  38. 38.? + 2 = 10
  39. 39.? + 1 = 19
  40. 40.There are 11 blue flowers and 7 white flowers. How many flowers are there in all?

Answer key

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

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