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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 4 · 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. 1.19 + 1 =
  2. 2.11 + 5 =
  3. 3.There are 9 green balloons and 9 white balloons. How many balloons are there in all?
  4. 4.4 + ? = 8
  5. 5.There are 3 blue balloons and 7 pink balloons. How many balloons are there in all?
  6. 6.11 + 9 =
  7. 7.There are 8 white balls and 4 pink balls. How many balls are there in all?
  8. 8.? + 1 = 9
  9. 9.7 + 8 + 5 =
  10. 10.4 + 7 + 7 =
  11. 11.There are 8 white beads and 7 blue beads. How many beads are there in all?
  12. 12.3 + ? = 4
  13. 13.3 + 7 + 10 =
  14. 14.There are 10 green balls and 8 pink balls. How many balls are there in all?
  15. 15.There are 11 green balloons and 2 pink balloons. How many balloons are there in all?
  16. 16.6 + 8 + 3 =
  17. 17.Rahul has 13 shells and gets 2 shells more. How many shells does Rahul have now?
  18. 18.There are 2 blue crayons and 13 red crayons. How many crayons are there in all?
  19. 19.There are 4 yellow kites and 4 blue kites. How many kites are there in all?
  20. 20.There are 10 pink balloons and 4 white balloons. How many balloons are there in all?
  21. 21.? + 13 = 17
  22. 22.15 + 5 =
  23. 23.5 + 6 + 7 =
  24. 24.Ananya has 5 balloons and gets 14 balloons more. How many balloons does Ananya have now?
  25. 25.6 + 4 =
  26. 26.2 + 8 + 3 =
  27. 27.Meera has 15 marbles and gets 3 marbles more. How many marbles does Meera have now?
  28. 28.1 + ? = 8
  29. 29.Gurpreet has 3 mangoes and gets 17 mangoes more. How many mangoes does Gurpreet have now?
  30. 30.There are 9 yellow crayons and 4 blue crayons. How many crayons are there in all?
  31. 31.9 + 5 =
  32. 32.2 + 2 + 10 =
  33. 33.There are 7 white balloons and 3 pink balloons. How many balloons are there in all?
  34. 34.5 + 14 =
  35. 35.1 + ? = 10
  36. 36.6 + 10 =
  37. 37.Meera has 11 flowers and gets 8 flowers more. How many flowers does Meera have now?
  38. 38.7 + 3 + 2 =
  39. 39.Sneha has 4 books and gets 2 books more. How many books does Sneha have now?
  40. 40.Rahul has 2 books and gets 14 books more. How many books does Rahul have now?

Answer key

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

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