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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 460 · 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.There are 8 yellow flowers and 3 red flowers. How many flowers are there in all?
  2. 2.There are 10 green balloons and 6 white balloons. How many balloons are there in all?
  3. 3.8 + 8 + 1 =
  4. 4.? + 3 = 12
  5. 5.Kabir has 3 bananas and gets 13 bananas more. How many bananas does Kabir have now?
  6. 6.2 + 5 + 9 =
  7. 7.? + 1 = 4
  8. 8.There are 2 white balls and 2 green balls. How many balls are there in all?
  9. 9.Tara has 4 balloons and gets 16 balloons more. How many balloons does Tara have now?
  10. 10.1 + 1 + 12 =
  11. 11.? + 4 = 9
  12. 12.2 + 7 + 10 =
  13. 13.? + 5 = 8
  14. 14.2 + 2 + 2 =
  15. 15.Diya has 5 bananas and gets 3 bananas more. How many bananas does Diya have now?
  16. 16.There are 7 blue flowers and 3 pink flowers. How many flowers are there in all?
  17. 17.9 + ? = 13
  18. 18.Rohan has 9 crayons and gets 6 crayons more. How many crayons does Rohan have now?
  19. 19.? + 2 = 9
  20. 20.There are 8 blue crayons and 11 red crayons. How many crayons are there in all?
  21. 21.Arjun has 4 mangoes and gets 6 mangoes more. How many mangoes does Arjun have now?
  22. 22.3 + 3 + 11 =
  23. 23.5 + 7 =
  24. 24.3 + ? = 6
  25. 25.4 + 7 + 1 =
  26. 26.8 + ? = 9
  27. 27.Aditya has 10 shells and gets 2 shells more. How many shells does Aditya have now?
  28. 28.Rohan has 2 marbles and gets 7 marbles more. How many marbles does Rohan have now?
  29. 29.7 + 4 + 2 =
  30. 30.19 + 1 =
  31. 31.6 + 3 =
  32. 32.Farhan has 8 crayons and gets 7 crayons more. How many crayons does Farhan have now?
  33. 33.3 + 16 =
  34. 34.5 + 8 + 1 =
  35. 35.6 + ? = 14
  36. 36.16 + 3 =
  37. 37.? + 11 = 19
  38. 38.15 + 3 =
  39. 39.Saanvi has 12 balls and gets 7 balls more. How many balls does Saanvi have now?
  40. 40.6 + ? = 7

Answer key

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

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