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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 897 · 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. 1.1 + ? = 4
  2. 2.Gurpreet has 4 balloons and gets 12 balloons more. How many balloons does Gurpreet have now?
  3. 3.15 + 2 =
  4. 4.There are 3 green beads and 8 white beads. How many beads are there in all?
  5. 5.11 + 2 =
  6. 6.Aditya has 7 pencils and gets 10 pencils more. How many pencils does Aditya have now?
  7. 7.3 + 7 =
  8. 8.Pooja has 15 mangoes and gets 4 mangoes more. How many mangoes does Pooja have now?
  9. 9.10 + 1 =
  10. 10.There are 4 blue balloons and 6 pink balloons. How many balloons are there in all?
  11. 11.4 + ? = 5
  12. 12.11 + 3 =
  13. 13.18 + 2 =
  14. 14.There are 7 blue kites and 13 red kites. How many kites are there in all?
  15. 15.6 + 2 + 4 =
  16. 16.Sneha has 14 balloons and gets 4 balloons more. How many balloons does Sneha have now?
  17. 17.There are 12 blue kites and 8 yellow kites. How many kites are there in all?
  18. 18.9 + 2 =
  19. 19.There are 12 yellow crayons and 4 green crayons. How many crayons are there in all?
  20. 20.? + 7 = 11
  21. 21.9 + 11 =
  22. 22.10 + 5 =
  23. 23.19 + 1 =
  24. 24.17 + 2 =
  25. 25.There are 8 blue balloons and 2 green balloons. How many balloons are there in all?
  26. 26.4 + ? = 12
  27. 27.1 + 8 + 2 =
  28. 28.1 + 5 + 5 =
  29. 29.Rahul has 12 kites and gets 4 kites more. How many kites does Rahul have now?
  30. 30.Dev has 13 flowers and gets 3 flowers more. How many flowers does Dev have now?
  31. 31.8 + 4 + 8 =
  32. 32.17 + 3 =
  33. 33.3 + 8 + 1 =
  34. 34.3 + ? = 6
  35. 35.17 + 1 =
  36. 36.Meera has 13 bananas and gets 7 bananas more. How many bananas does Meera have now?
  37. 37.5 + 5 + 6 =
  38. 38.5 + 7 =
  39. 39.? + 5 = 6
  40. 40.16 + 2 =

Answer key

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

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