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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 847 · 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.Arjun has 11 balloons and gets 7 balloons more. How many balloons does Arjun have now?
  2. 2.There are 10 pink balls and 10 blue balls. How many balls are there in all?
  3. 3.Ananya has 9 shells and gets 6 shells more. How many shells does Ananya have now?
  4. 4.? + 4 = 15
  5. 5.15 + 1 =
  6. 6.There are 7 blue beads and 11 red beads. How many beads are there in all?
  7. 7.5 + 11 =
  8. 8.There are 12 red beads and 6 white beads. How many beads are there in all?
  9. 9.2 + 2 + 10 =
  10. 10.7 + 3 + 5 =
  11. 11.There are 9 green balls and 2 blue balls. How many balls are there in all?
  12. 12.19 + 1 =
  13. 13.Dev has 6 mangoes and gets 2 mangoes more. How many mangoes does Dev have now?
  14. 14.? + 12 = 18
  15. 15.2 + 8 + 2 =
  16. 16.17 + 2 =
  17. 17.There are 6 pink balls and 3 green balls. How many balls are there in all?
  18. 18.8 + 8 =
  19. 19.3 + ? = 13
  20. 20.? + 10 = 14
  21. 21.4 + 4 + 5 =
  22. 22.? + 10 = 20
  23. 23.2 + ? = 7
  24. 24.5 + ? = 6
  25. 25.2 + 1 + 15 =
  26. 26.Ishaan has 15 flowers and gets 5 flowers more. How many flowers does Ishaan have now?
  27. 27.Rahul has 11 shells and gets 9 shells more. How many shells does Rahul have now?
  28. 28.9 + ? = 14
  29. 29.2 + 2 + 9 =
  30. 30.1 + ? = 19
  31. 31.Arjun has 9 books and gets 4 books more. How many books does Arjun have now?
  32. 32.There are 2 pink balls and 4 white balls. How many balls are there in all?
  33. 33.6 + 4 =
  34. 34.3 + 9 =
  35. 35.8 + 12 =
  36. 36.6 + ? = 19
  37. 37.3 + 3 =
  38. 38.4 + 6 + 6 =
  39. 39.There are 7 green crayons and 13 pink crayons. How many crayons are there in all?
  40. 40.Joseph has 5 kites and gets 5 kites more. How many kites does Joseph have now?

Answer key

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

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