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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 15 · 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. 1.8 + 1 =
  2. 2.7 + 13 =
  3. 3.Sneha has 3 pencils and gets 1 pencil more. How many pencils does Sneha have now?
  4. 4.Isha has 14 laddoos and gets 2 laddoos more. How many laddoos does Isha have now?
  5. 5.3 + ? = 18
  6. 6.5 + 3 + 10 =
  7. 7.1 + 17 =
  8. 8.2 + ? = 14
  9. 9.5 + 1 =
  10. 10.1 + ? = 9
  11. 11.10 + 5 =
  12. 12.6 + ? = 7
  13. 13.There are 10 red beads and 7 blue beads. How many beads are there in all?
  14. 14.Gurpreet has 9 balloons and gets 6 balloons more. How many balloons does Gurpreet have now?
  15. 15.There are 9 red flowers and 6 blue flowers. How many flowers are there in all?
  16. 16.11 + 3 =
  17. 17.2 + 7 + 3 =
  18. 18.5 + 5 + 1 =
  19. 19.1 + 6 + 9 =
  20. 20.Farhan has 2 shells and gets 14 shells more. How many shells does Farhan have now?
  21. 21.Sneha has 2 marbles and gets 10 marbles more. How many marbles does Sneha have now?
  22. 22.There are 5 red balloons and 3 white balloons. How many balloons are there in all?
  23. 23.There are 9 green flowers and 8 yellow flowers. How many flowers are there in all?
  24. 24.6 + ? = 16
  25. 25.Arjun has 14 mangoes and gets 5 mangoes more. How many mangoes does Arjun have now?
  26. 26.16 + 3 =
  27. 27.There are 4 blue balloons and 10 white balloons. How many balloons are there in all?
  28. 28.Rohan has 14 kites and gets 5 kites more. How many kites does Rohan have now?
  29. 29.7 + 8 + 4 =
  30. 30.7 + 4 + 1 =
  31. 31.There are 7 pink balloons and 13 green balloons. How many balloons are there in all?
  32. 32.4 + 8 + 7 =
  33. 33.Ananya has 2 mangoes and gets 14 mangoes more. How many mangoes does Ananya have now?
  34. 34.2 + 16 =
  35. 35.4 + 4 =
  36. 36.Arjun has 10 pencils and gets 4 pencils more. How many pencils does Arjun have now?
  37. 37.Tara has 8 mangoes and gets 1 mango more. How many mangoes does Tara have now?
  38. 38.? + 5 = 7
  39. 39.6 + 13 =
  40. 40.There are 3 red balloons and 8 green balloons. How many balloons are there in all?

Answer key

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

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