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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 247 · 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. 1.3 + 1 + 8 =
  2. 2.3 + 1 + 1 =
  3. 3.Kabir has 14 pencils and gets 4 pencils more. How many pencils does Kabir have now?
  4. 4.9 + 2 =
  5. 5.4 + 3 + 2 =
  6. 6.7 + ? = 14
  7. 7.8 + ? = 16
  8. 8.11 + 9 =
  9. 9.Tara has 8 pencils and gets 8 pencils more. How many pencils does Tara have now?
  10. 10.Ishaan has 12 balls and gets 6 balls more. How many balls does Ishaan have now?
  11. 11.5 + 12 =
  12. 12.14 + ? = 19
  13. 13.Arjun has 4 balls and gets 8 balls more. How many balls does Arjun have now?
  14. 14.14 + 1 =
  15. 15.Nisha has 10 marbles and gets 3 marbles more. How many marbles does Nisha have now?
  16. 16.3 + 16 =
  17. 17.8 + 10 =
  18. 18.1 + 8 + 11 =
  19. 19.Pooja has 7 shells and gets 3 shells more. How many shells does Pooja have now?
  20. 20.7 + 3 + 7 =
  21. 21.3 + 7 + 5 =
  22. 22.2 + ? = 6
  23. 23.6 + 5 =
  24. 24.4 + 6 =
  25. 25.4 + ? = 18
  26. 26.8 + 2 =
  27. 27.7 + ? = 13
  28. 28.Rohan has 5 pencils and gets 4 pencils more. How many pencils does Rohan have now?
  29. 29.Gurpreet has 8 books and gets 4 books more. How many books does Gurpreet have now?
  30. 30.Priya has 12 balloons and gets 7 balloons more. How many balloons does Priya have now?
  31. 31.1 + ? = 6
  32. 32.8 + 5 + 1 =
  33. 33.There are 10 yellow beads and 4 green beads. How many beads are there in all?
  34. 34.There are 9 green balloons and 5 yellow balloons. How many balloons are there in all?
  35. 35.6 + 2 + 10 =
  36. 36.Sneha has 12 laddoos and gets 2 laddoos more. How many laddoos does Sneha have now?
  37. 37.9 + 6 =
  38. 38.4 + 5 + 1 =
  39. 39.4 + 3 + 11 =
  40. 40.11 + ? = 14

Answer key

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

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