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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 846 · 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. 1.5 + 4 + 4 =
  2. 2.? + 13 = 15
  3. 3.There are 3 red balls and 12 white balls. How many balls are there in all?
  4. 4.Aarav has 11 balloons and gets 1 balloon more. How many balloons does Aarav have now?
  5. 5.4 + 8 =
  6. 6.Meera has 5 kites and gets 3 kites more. How many kites does Meera have now?
  7. 7.2 + 6 + 11 =
  8. 8.3 + 12 =
  9. 9.19 + 1 =
  10. 10.? + 1 = 12
  11. 11.3 + ? = 12
  12. 12.1 + 7 =
  13. 13.4 + 6 + 5 =
  14. 14.13 + ? = 19
  15. 15.7 + ? = 12
  16. 16.5 + ? = 6
  17. 17.Lakshmi has 10 books and gets 3 books more. How many books does Lakshmi have now?
  18. 18.There are 8 yellow beads and 10 green beads. How many beads are there in all?
  19. 19.There are 9 pink balls and 6 blue balls. How many balls are there in all?
  20. 20.4 + 1 + 7 =
  21. 21.There are 5 red flowers and 6 white flowers. How many flowers are there in all?
  22. 22.17 + ? = 20
  23. 23.Saanvi has 2 bananas and gets 13 bananas more. How many bananas does Saanvi have now?
  24. 24.6 + 3 + 6 =
  25. 25.? + 4 = 17
  26. 26.8 + 5 + 3 =
  27. 27.Saanvi has 7 marbles and gets 1 marble more. How many marbles does Saanvi have now?
  28. 28.3 + 8 + 5 =
  29. 29.There are 8 blue balloons and 3 pink balloons. How many balloons are there in all?
  30. 30.There are 8 blue balloons and 9 yellow balloons. How many balloons are there in all?
  31. 31.16 + 4 =
  32. 32.5 + 10 =
  33. 33.Aarav has 6 balloons and gets 9 balloons more. How many balloons does Aarav have now?
  34. 34.There are 8 yellow balls and 7 red balls. How many balls are there in all?
  35. 35.Nisha has 14 kites and gets 3 kites more. How many kites does Nisha have now?
  36. 36.Diya has 2 pencils and gets 11 pencils more. How many pencils does Diya have now?
  37. 37.17 + 2 =
  38. 38.5 + 2 + 3 =
  39. 39.8 + ? = 10
  40. 40.Rohan has 6 balloons and gets 9 balloons more. How many balloons does Rohan have now?

Answer key

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

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