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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 415 · 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. 1.11 + ? = 19
  2. 2.Aditya has 6 balls and gets 7 balls more. How many balls does Aditya have now?
  3. 3.5 + ? = 6
  4. 4.? + 6 = 8
  5. 5.Sneha has 2 balls and gets 5 balls more. How many balls does Sneha have now?
  6. 6.There are 10 green flowers and 5 red flowers. How many flowers are there in all?
  7. 7.There are 6 white balls and 3 blue balls. How many balls are there in all?
  8. 8.Zoya has 10 shells and gets 4 shells more. How many shells does Zoya have now?
  9. 9.Arjun has 9 balloons and gets 11 balloons more. How many balloons does Arjun have now?
  10. 10.Zoya has 9 shells and gets 8 shells more. How many shells does Zoya have now?
  11. 11.There are 5 pink balls and 4 red balls. How many balls are there in all?
  12. 12.1 + 2 + 11 =
  13. 13.Sneha has 7 marbles and gets 9 marbles more. How many marbles does Sneha have now?
  14. 14.Manav has 4 kites and gets 12 kites more. How many kites does Manav have now?
  15. 15.6 + 2 + 7 =
  16. 16.4 + 5 + 8 =
  17. 17.Gurpreet has 11 mangoes and gets 8 mangoes more. How many mangoes does Gurpreet have now?
  18. 18.Isha has 4 mangoes and gets 3 mangoes more. How many mangoes does Isha have now?
  19. 19.There are 10 blue flowers and 4 red flowers. How many flowers are there in all?
  20. 20.There are 3 green balls and 12 white balls. How many balls are there in all?
  21. 21.There are 11 green kites and 7 yellow kites. How many kites are there in all?
  22. 22.6 + 2 =
  23. 23.9 + 1 =
  24. 24.3 + 8 + 6 =
  25. 25.3 + 3 + 7 =
  26. 26.18 + 2 =
  27. 27.4 + 7 =
  28. 28.8 + 6 + 1 =
  29. 29.Aarav has 6 mangoes and gets 10 mangoes more. How many mangoes does Aarav have now?
  30. 30.There are 9 red flowers and 7 green flowers. How many flowers are there in all?
  31. 31.1 + 4 + 3 =
  32. 32.There are 12 pink balloons and 7 red balloons. How many balloons are there in all?
  33. 33.13 + 7 =
  34. 34.? + 6 = 19
  35. 35.? + 1 = 10
  36. 36.19 + 1 =
  37. 37.Kabir has 2 marbles and gets 14 marbles more. How many marbles does Kabir have now?
  38. 38.6 + 3 + 5 =
  39. 39.11 + 4 =
  40. 40.There are 2 green balls and 18 blue balls. How many balls are there in all?

Answer key

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

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