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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 89 · 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. 1.4 + ? = 5
  2. 2.There are 3 blue balloons and 16 green balloons. How many balloons are there in all?
  3. 3.Aditya has 6 balloons and gets 13 balloons more. How many balloons does Aditya have now?
  4. 4.Lakshmi has 2 bananas and gets 15 bananas more. How many bananas does Lakshmi have now?
  5. 5.There are 12 pink balloons and 4 red balloons. How many balloons are there in all?
  6. 6.? + 1 = 5
  7. 7.Kavya has 13 crayons and gets 3 crayons more. How many crayons does Kavya have now?
  8. 8.There are 12 white balls and 5 blue balls. How many balls are there in all?
  9. 9.Ishaan has 9 balls and gets 9 balls more. How many balls does Ishaan have now?
  10. 10.4 + 3 + 11 =
  11. 11.Sneha has 13 flowers and gets 2 flowers more. How many flowers does Sneha have now?
  12. 12.There are 4 pink crayons and 5 yellow crayons. How many crayons are there in all?
  13. 13.5 + 6 + 5 =
  14. 14.3 + 16 =
  15. 15.1 + 10 =
  16. 16.Kabir has 7 bananas and gets 4 bananas more. How many bananas does Kabir have now?
  17. 17.4 + 5 =
  18. 18.There are 3 pink balls and 4 red balls. How many balls are there in all?
  19. 19.? + 1 = 6
  20. 20.Tara has 2 marbles and gets 8 marbles more. How many marbles does Tara have now?
  21. 21.14 + 2 =
  22. 22.12 + 6 =
  23. 23.6 + 11 =
  24. 24.? + 1 = 3
  25. 25.12 + 1 =
  26. 26.Ishaan has 11 pencils and gets 6 pencils more. How many pencils does Ishaan have now?
  27. 27.There are 2 green flowers and 18 blue flowers. How many flowers are there in all?
  28. 28.There are 4 yellow kites and 13 blue kites. How many kites are there in all?
  29. 29.There are 4 blue kites and 7 yellow kites. How many kites are there in all?
  30. 30.5 + 8 + 5 =
  31. 31.5 + ? = 7
  32. 32.2 + 15 =
  33. 33.3 + 8 + 1 =
  34. 34.There are 11 white beads and 8 pink beads. How many beads are there in all?
  35. 35.Gurpreet has 4 shells and gets 8 shells more. How many shells does Gurpreet have now?
  36. 36.2 + 2 =
  37. 37.4 + 1 + 15 =
  38. 38.3 + 13 =
  39. 39.Pooja has 12 books and gets 5 books more. How many books does Pooja have now?
  40. 40.6 + 5 + 7 =

Answer key

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

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