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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 335 · 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.Lakshmi has 9 balloons and gets 2 balloons more. How many balloons does Lakshmi have now?
  3. 3.8 + 3 + 9 =
  4. 4.5 + 8 + 2 =
  5. 5.Ishaan has 13 laddoos and gets 4 laddoos more. How many laddoos does Ishaan have now?
  6. 6.There are 7 blue beads and 8 yellow beads. How many beads are there in all?
  7. 7.7 + 2 + 11 =
  8. 8.7 + 10 =
  9. 9.5 + ? = 7
  10. 10.1 + 7 + 9 =
  11. 11.5 + 6 + 8 =
  12. 12.10 + 7 =
  13. 13.There are 6 yellow balls and 9 red balls. How many balls are there in all?
  14. 14.8 + 4 + 3 =
  15. 15.Manav has 2 shells and gets 5 shells more. How many shells does Manav have now?
  16. 16.? + 1 = 7
  17. 17.10 + 1 =
  18. 18.18 + 2 =
  19. 19.6 + 1 =
  20. 20.? + 3 = 6
  21. 21.3 + 13 =
  22. 22.Riya has 4 mangoes and gets 1 mango more. How many mangoes does Riya have now?
  23. 23.There are 2 blue balls and 4 pink balls. How many balls are there in all?
  24. 24.Isha has 12 balloons and gets 7 balloons more. How many balloons does Isha have now?
  25. 25.3 + ? = 4
  26. 26.There are 8 white kites and 8 pink kites. How many kites are there in all?
  27. 27.1 + 2 + 11 =
  28. 28.? + 7 = 17
  29. 29.2 + 9 =
  30. 30.6 + ? = 18
  31. 31.? + 1 = 3
  32. 32.Meera has 2 balloons and gets 16 balloons more. How many balloons does Meera have now?
  33. 33.Karan has 3 flowers and gets 10 flowers more. How many flowers does Karan have now?
  34. 34.Joseph has 6 books and gets 4 books more. How many books does Joseph have now?
  35. 35.5 + 1 + 10 =
  36. 36.? + 10 = 11
  37. 37.15 + 5 =
  38. 38.17 + 3 =
  39. 39.Sneha has 4 pencils and gets 7 pencils more. How many pencils does Sneha have now?
  40. 40.1 + 14 =

Answer key

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

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