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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 780 · 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. 1.17 + 1 =
  2. 2.There are 4 blue balls and 16 yellow balls. How many balls are there in all?
  3. 3.Rahul has 9 balls and gets 6 balls more. How many balls does Rahul have now?
  4. 4.7 + ? = 12
  5. 5.Manav has 14 crayons and gets 1 crayon more. How many crayons does Manav have now?
  6. 6.7 + 11 =
  7. 7.5 + 7 + 4 =
  8. 8.Saanvi has 9 bananas and gets 8 bananas more. How many bananas does Saanvi have now?
  9. 9.2 + 2 + 7 =
  10. 10.16 + 3 =
  11. 11.? + 1 = 3
  12. 12.Aditya has 13 shells and gets 6 shells more. How many shells does Aditya have now?
  13. 13.17 + 3 =
  14. 14.5 + ? = 12
  15. 15.3 + 2 + 2 =
  16. 16.13 + 5 =
  17. 17.6 + 6 + 3 =
  18. 18.1 + 8 + 5 =
  19. 19.2 + 6 + 11 =
  20. 20.16 + 2 =
  21. 21.Farhan has 2 books and gets 3 books more. How many books does Farhan have now?
  22. 22.Meera has 5 books and gets 14 books more. How many books does Meera have now?
  23. 23.3 + ? = 11
  24. 24.Nisha has 10 marbles and gets 2 marbles more. How many marbles does Nisha have now?
  25. 25.6 + 7 + 1 =
  26. 26.There are 5 green flowers and 7 red flowers. How many flowers are there in all?
  27. 27.? + 3 = 11
  28. 28.2 + 2 + 6 =
  29. 29.There are 9 blue crayons and 11 red crayons. How many crayons are there in all?
  30. 30.? + 7 = 12
  31. 31.There are 6 red beads and 2 blue beads. How many beads are there in all?
  32. 32.7 + 1 =
  33. 33.4 + 2 + 6 =
  34. 34.Kabir has 5 bananas and gets 10 bananas more. How many bananas does Kabir have now?
  35. 35.3 + 8 + 3 =
  36. 36.Rohan has 14 balloons and gets 1 balloon more. How many balloons does Rohan have now?
  37. 37.13 + 6 =
  38. 38.3 + ? = 4
  39. 39.There are 11 blue flowers and 3 yellow flowers. How many flowers are there in all?
  40. 40.? + 6 = 20

Answer key

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

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