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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 906 · 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.Aarav has 15 balloons and gets 5 balloons more. How many balloons does Aarav have now?
  2. 2.Meera has 13 marbles and gets 4 marbles more. How many marbles does Meera have now?
  3. 3.Farhan has 14 balls and gets 3 balls more. How many balls does Farhan have now?
  4. 4.3 + 17 =
  5. 5.10 + ? = 13
  6. 6.Pooja has 4 mangoes and gets 13 mangoes more. How many mangoes does Pooja have now?
  7. 7.7 + 1 =
  8. 8.There are 7 green balloons and 11 pink balloons. How many balloons are there in all?
  9. 9.1 + 2 + 12 =
  10. 10.There are 7 white flowers and 4 yellow flowers. How many flowers are there in all?
  11. 11.9 + 4 =
  12. 12.8 + 6 + 2 =
  13. 13.1 + 14 =
  14. 14.Manav has 11 pencils and gets 3 pencils more. How many pencils does Manav have now?
  15. 15.6 + 1 + 3 =
  16. 16.1 + 1 + 5 =
  17. 17.There are 3 blue flowers and 16 green flowers. How many flowers are there in all?
  18. 18.8 + 6 + 6 =
  19. 19.18 + 1 =
  20. 20.There are 5 blue balloons and 6 pink balloons. How many balloons are there in all?
  21. 21.6 + 2 =
  22. 22.16 + 1 =
  23. 23.? + 2 = 4
  24. 24.? + 8 = 11
  25. 25.8 + 7 =
  26. 26.There are 3 pink kites and 6 blue kites. How many kites are there in all?
  27. 27.5 + 6 + 3 =
  28. 28.? + 15 = 19
  29. 29.3 + 3 + 11 =
  30. 30.1 + ? = 9
  31. 31.There are 11 red kites and 7 pink kites. How many kites are there in all?
  32. 32.1 + 7 =
  33. 33.There are 6 red balloons and 3 yellow balloons. How many balloons are there in all?
  34. 34.There are 6 red balls and 10 white balls. How many balls are there in all?
  35. 35.17 + 2 =
  36. 36.13 + ? = 15
  37. 37.Joseph has 8 mangoes and gets 4 mangoes more. How many mangoes does Joseph have now?
  38. 38.2 + 7 + 9 =
  39. 39.11 + 8 =
  40. 40.Manav has 9 flowers and gets 10 flowers more. How many flowers does Manav have now?

Answer key

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

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