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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 332 · 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 9 blue balls and 5 white balls. How many balls are there in all?
  2. 2.5 + 1 + 11 =
  3. 3.5 + 7 + 8 =
  4. 4.Karan has 6 bananas and gets 4 bananas more. How many bananas does Karan have now?
  5. 5.1 + ? = 3
  6. 6.1 + 3 =
  7. 7.9 + ? = 16
  8. 8.9 + 9 =
  9. 9.19 + 1 =
  10. 10.11 + ? = 14
  11. 11.5 + 7 + 3 =
  12. 12.There are 9 red balls and 3 white balls. How many balls are there in all?
  13. 13.? + 11 = 17
  14. 14.2 + ? = 14
  15. 15.8 + 7 + 5 =
  16. 16.? + 6 = 10
  17. 17.Nisha has 12 balloons and gets 5 balloons more. How many balloons does Nisha have now?
  18. 18.Priya has 2 bananas and gets 5 bananas more. How many bananas does Priya have now?
  19. 19.6 + 1 + 3 =
  20. 20.14 + 1 =
  21. 21.There are 3 green kites and 3 white kites. How many kites are there in all?
  22. 22.6 + 1 + 6 =
  23. 23.Zoya has 12 mangoes and gets 2 mangoes more. How many mangoes does Zoya have now?
  24. 24.There are 2 green balloons and 3 pink balloons. How many balloons are there in all?
  25. 25.? + 9 = 14
  26. 26.There are 10 green balloons and 2 pink balloons. How many balloons are there in all?
  27. 27.? + 3 = 8
  28. 28.10 + ? = 13
  29. 29.Arjun has 13 mangoes and gets 6 mangoes more. How many mangoes does Arjun have now?
  30. 30.Aditya has 5 laddoos and gets 8 laddoos more. How many laddoos does Aditya have now?
  31. 31.7 + 6 =
  32. 32.There are 5 yellow beads and 14 red beads. How many beads are there in all?
  33. 33.14 + 5 =
  34. 34.? + 1 = 7
  35. 35.Arjun has 4 crayons and gets 12 crayons more. How many crayons does Arjun have now?
  36. 36.13 + 3 =
  37. 37.Rohan has 5 balls and gets 9 balls more. How many balls does Rohan have now?
  38. 38.? + 6 = 8
  39. 39.1 + 1 =
  40. 40.8 + 5 + 1 =

Answer key

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

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