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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 626 · 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.? + 10 = 18
  2. 2.There are 9 red beads and 3 blue beads. How many beads are there in all?
  3. 3.Kabir has 6 pencils and gets 4 pencils more. How many pencils does Kabir have now?
  4. 4.Karan has 4 books and gets 2 books more. How many books does Karan have now?
  5. 5.? + 3 = 9
  6. 6.Kabir has 3 mangoes and gets 3 mangoes more. How many mangoes does Kabir have now?
  7. 7.There are 9 yellow balloons and 7 green balloons. How many balloons are there in all?
  8. 8.3 + 2 + 5 =
  9. 9.12 + 6 =
  10. 10.There are 9 blue flowers and 6 red flowers. How many flowers are there in all?
  11. 11.8 + 1 + 11 =
  12. 12.? + 3 = 6
  13. 13.10 + 5 =
  14. 14.15 + 5 =
  15. 15.Rohan has 9 bananas and gets 5 bananas more. How many bananas does Rohan have now?
  16. 16.5 + 4 + 6 =
  17. 17.? + 8 = 19
  18. 18.3 + 3 + 3 =
  19. 19.Meera has 12 crayons and gets 8 crayons more. How many crayons does Meera have now?
  20. 20.? + 8 = 9
  21. 21.? + 7 = 13
  22. 22.Nisha has 4 flowers and gets 1 flower more. How many flowers does Nisha have now?
  23. 23.7 + ? = 12
  24. 24.6 + 2 =
  25. 25.Diya has 7 balls and gets 11 balls more. How many balls does Diya have now?
  26. 26.? + 3 = 14
  27. 27.2 + ? = 4
  28. 28.? + 1 = 3
  29. 29.17 + ? = 18
  30. 30.7 + ? = 16
  31. 31.2 + 1 + 16 =
  32. 32.6 + 8 + 6 =
  33. 33.Nisha has 15 balloons and gets 2 balloons more. How many balloons does Nisha have now?
  34. 34.17 + 1 =
  35. 35.? + 6 = 12
  36. 36.Rahul has 13 books and gets 7 books more. How many books does Rahul have now?
  37. 37.4 + 3 + 11 =
  38. 38.9 + 7 =
  39. 39.2 + 2 + 5 =
  40. 40.5 + 9 =

Answer key

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

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