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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 278 · 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 + ? = 11
  2. 2.There are 5 green balls and 2 white balls. How many balls are there in all?
  3. 3.? + 8 = 11
  4. 4.1 + 1 + 9 =
  5. 5.Sneha has 10 pencils and gets 3 pencils more. How many pencils does Sneha have now?
  6. 6.Arjun has 13 balloons and gets 3 balloons more. How many balloons does Arjun have now?
  7. 7.8 + 5 =
  8. 8.7 + 7 + 2 =
  9. 9.? + 8 = 10
  10. 10.5 + 15 =
  11. 11.There are 4 pink beads and 3 blue beads. How many beads are there in all?
  12. 12.1 + 1 + 8 =
  13. 13.Meera has 11 balls and gets 8 balls more. How many balls does Meera have now?
  14. 14.1 + 2 + 17 =
  15. 15.15 + 2 =
  16. 16.2 + 7 + 4 =
  17. 17.1 + 10 =
  18. 18.There are 12 red balls and 2 green balls. How many balls are there in all?
  19. 19.Manav has 6 books and gets 4 books more. How many books does Manav have now?
  20. 20.There are 3 red balls and 7 pink balls. How many balls are there in all?
  21. 21.Pooja has 11 flowers and gets 1 flower more. How many flowers does Pooja have now?
  22. 22.There are 7 white balloons and 13 green balloons. How many balloons are there in all?
  23. 23.Pooja has 5 balls and gets 2 balls more. How many balls does Pooja have now?
  24. 24.There are 8 blue flowers and 11 red flowers. How many flowers are there in all?
  25. 25.9 + 4 =
  26. 26.? + 3 = 8
  27. 27.4 + 7 =
  28. 28.2 + 2 + 4 =
  29. 29.There are 8 pink beads and 10 blue beads. How many beads are there in all?
  30. 30.? + 1 = 3
  31. 31.There are 2 white kites and 4 pink kites. How many kites are there in all?
  32. 32.2 + 5 =
  33. 33.1 + 1 + 1 =
  34. 34.There are 9 pink balls and 11 green balls. How many balls are there in all?
  35. 35.Nisha has 14 pencils and gets 2 pencils more. How many pencils does Nisha have now?
  36. 36.16 + 4 =
  37. 37.There are 4 red kites and 14 pink kites. How many kites are there in all?
  38. 38.18 + 2 =
  39. 39.Sneha has 2 mangoes and gets 13 mangoes more. How many mangoes does Sneha have now?
  40. 40.There are 6 white flowers and 9 pink flowers. How many flowers are there in all?

Answer key

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

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