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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 291 · 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. 1.19 + 1 =
  2. 2.15 + 5 =
  3. 3.1 + 14 =
  4. 4.? + 2 = 13
  5. 5.1 + 4 + 8 =
  6. 6.2 + ? = 12
  7. 7.There are 10 white balloons and 8 red balloons. How many balloons are there in all?
  8. 8.Kabir has 9 balls and gets 7 balls more. How many balls does Kabir have now?
  9. 9.5 + 3 =
  10. 10.7 + 3 + 5 =
  11. 11.Sneha has 11 flowers and gets 1 flower more. How many flowers does Sneha have now?
  12. 12.Meera has 9 balls and gets 5 balls more. How many balls does Meera have now?
  13. 13.There are 12 green flowers and 5 blue flowers. How many flowers are there in all?
  14. 14.There are 7 white balloons and 6 blue balloons. How many balloons are there in all?
  15. 15.2 + ? = 20
  16. 16.There are 5 red kites and 3 white kites. How many kites are there in all?
  17. 17.2 + ? = 3
  18. 18.6 + ? = 12
  19. 19.10 + 6 =
  20. 20.2 + 6 + 5 =
  21. 21.5 + 4 + 5 =
  22. 22.10 + 8 =
  23. 23.? + 1 = 4
  24. 24.4 + 8 + 1 =
  25. 25.8 + ? = 17
  26. 26.Pooja has 9 shells and gets 1 shell more. How many shells does Pooja have now?
  27. 27.There are 5 red kites and 10 green kites. How many kites are there in all?
  28. 28.Gurpreet has 11 flowers and gets 7 flowers more. How many flowers does Gurpreet have now?
  29. 29.Karan has 8 pencils and gets 12 pencils more. How many pencils does Karan have now?
  30. 30.7 + 2 =
  31. 31.There are 5 red balloons and 7 green balloons. How many balloons are there in all?
  32. 32.Ananya has 14 balls and gets 4 balls more. How many balls does Ananya have now?
  33. 33.There are 11 blue kites and 9 white kites. How many kites are there in all?
  34. 34.There are 3 yellow beads and 11 green beads. How many beads are there in all?
  35. 35.There are 10 white balloons and 4 red balloons. How many balloons are there in all?
  36. 36.There are 2 pink balloons and 14 white balloons. How many balloons are there in all?
  37. 37.16 + 4 =
  38. 38.3 + ? = 8
  39. 39.Ishaan has 8 books and gets 6 books more. How many books does Ishaan have now?
  40. 40.There are 12 red flowers and 3 blue flowers. How many flowers are there in all?

Answer key

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

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