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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 327 · 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 + 2 =
  2. 2.10 + 1 =
  3. 3.5 + 10 =
  4. 4.There are 7 white beads and 9 green beads. How many beads are there in all?
  5. 5.Rahul has 14 balloons and gets 6 balloons more. How many balloons does Rahul have now?
  6. 6.There are 3 blue kites and 5 yellow kites. How many kites are there in all?
  7. 7.? + 2 = 4
  8. 8.17 + 1 =
  9. 9.There are 4 blue balloons and 8 yellow balloons. How many balloons are there in all?
  10. 10.Joseph has 4 books and gets 4 books more. How many books does Joseph have now?
  11. 11.8 + 7 + 3 =
  12. 12.Meera has 10 pencils and gets 7 pencils more. How many pencils does Meera have now?
  13. 13.4 + 7 + 1 =
  14. 14.Pooja has 4 bananas and gets 12 bananas more. How many bananas does Pooja have now?
  15. 15.3 + ? = 4
  16. 16.6 + 1 + 5 =
  17. 17.7 + 6 =
  18. 18.Joseph has 10 books and gets 10 books more. How many books does Joseph have now?
  19. 19.There are 3 yellow balls and 6 red balls. How many balls are there in all?
  20. 20.2 + 8 =
  21. 21.1 + 5 + 8 =
  22. 22.There are 8 white crayons and 12 green crayons. How many crayons are there in all?
  23. 23.5 + 5 =
  24. 24.3 + ? = 15
  25. 25.Nisha has 15 marbles and gets 1 marble more. How many marbles does Nisha have now?
  26. 26.8 + 5 + 1 =
  27. 27.7 + 1 + 1 =
  28. 28.7 + ? = 20
  29. 29.Aarav has 6 kites and gets 6 kites more. How many kites does Aarav have now?
  30. 30.2 + 11 =
  31. 31.10 + 10 =
  32. 32.Rohan has 11 balloons and gets 8 balloons more. How many balloons does Rohan have now?
  33. 33.There are 7 yellow beads and 6 pink beads. How many beads are there in all?
  34. 34.Priya has 3 marbles and gets 6 marbles more. How many marbles does Priya have now?
  35. 35.2 + 3 =
  36. 36.6 + ? = 8
  37. 37.There are 7 red flowers and 6 yellow flowers. How many flowers are there in all?
  38. 38.4 + ? = 6
  39. 39.3 + 2 + 7 =
  40. 40.Farhan has 5 books and gets 2 books more. How many books does Farhan have now?

Answer key

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

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