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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 817 · 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. 1.16 + 2 =
  2. 2.3 + 4 + 12 =
  3. 3.There are 2 yellow beads and 4 white beads. How many beads are there in all?
  4. 4.7 + 13 =
  5. 5.There are 7 pink balloons and 4 red balloons. How many balloons are there in all?
  6. 6.1 + 5 + 1 =
  7. 7.1 + ? = 9
  8. 8.5 + 12 =
  9. 9.There are 3 green balls and 10 blue balls. How many balls are there in all?
  10. 10.5 + 14 =
  11. 11.3 + 14 =
  12. 12.Sneha has 9 kites and gets 7 kites more. How many kites does Sneha have now?
  13. 13.8 + 7 + 3 =
  14. 14.18 + 1 =
  15. 15.3 + ? = 5
  16. 16.2 + ? = 11
  17. 17.5 + 2 + 1 =
  18. 18.There are 6 red balls and 2 white balls. How many balls are there in all?
  19. 19.Rahul has 8 pencils and gets 1 pencil more. How many pencils does Rahul have now?
  20. 20.6 + 5 + 5 =
  21. 21.There are 2 white kites and 11 pink kites. How many kites are there in all?
  22. 22.6 + 9 =
  23. 23.2 + 11 =
  24. 24.There are 11 red flowers and 3 white flowers. How many flowers are there in all?
  25. 25.7 + 4 + 3 =
  26. 26.1 + 3 + 9 =
  27. 27.Arjun has 2 flowers and gets 16 flowers more. How many flowers does Arjun have now?
  28. 28.15 + 2 =
  29. 29.15 + 5 =
  30. 30.12 + ? = 17
  31. 31.There are 2 pink kites and 13 green kites. How many kites are there in all?
  32. 32.8 + ? = 19
  33. 33.2 + ? = 12
  34. 34.There are 2 yellow balls and 13 green balls. How many balls are there in all?
  35. 35.There are 11 blue kites and 8 red kites. How many kites are there in all?
  36. 36.1 + 1 + 2 =
  37. 37.3 + ? = 4
  38. 38.There are 2 red crayons and 3 green crayons. How many crayons are there in all?
  39. 39.Meera has 2 balloons and gets 16 balloons more. How many balloons does Meera have now?
  40. 40.1 + ? = 5

Answer key

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

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