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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 372 · 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. 1.5 + 8 + 5 =
  2. 2.? + 9 = 12
  3. 3.? + 4 = 7
  4. 4.15 + 2 =
  5. 5.There are 12 pink balls and 4 white balls. How many balls are there in all?
  6. 6.5 + 8 + 3 =
  7. 7.6 + 3 + 9 =
  8. 8.There are 3 red kites and 9 pink kites. How many kites are there in all?
  9. 9.There are 6 white balloons and 13 red balloons. How many balloons are there in all?
  10. 10.There are 11 green balloons and 3 pink balloons. How many balloons are there in all?
  11. 11.Zoya has 9 laddoos and gets 1 laddoo more. How many laddoos does Zoya have now?
  12. 12.Farhan has 11 bananas and gets 1 banana more. How many bananas does Farhan have now?
  13. 13.7 + 8 + 1 =
  14. 14.1 + 8 + 10 =
  15. 15.Aarav has 8 mangoes and gets 3 mangoes more. How many mangoes does Aarav have now?
  16. 16.12 + 3 =
  17. 17.16 + 1 =
  18. 18.Nisha has 7 shells and gets 1 shell more. How many shells does Nisha have now?
  19. 19.There are 5 red kites and 5 green kites. How many kites are there in all?
  20. 20.Riya has 9 kites and gets 6 kites more. How many kites does Riya have now?
  21. 21.Ananya has 2 flowers and gets 11 flowers more. How many flowers does Ananya have now?
  22. 22.There are 10 green balls and 9 blue balls. How many balls are there in all?
  23. 23.There are 8 white kites and 6 red kites. How many kites are there in all?
  24. 24.? + 6 = 8
  25. 25.Zoya has 7 mangoes and gets 8 mangoes more. How many mangoes does Zoya have now?
  26. 26.8 + 4 + 7 =
  27. 27.13 + 2 =
  28. 28.Zoya has 7 balloons and gets 3 balloons more. How many balloons does Zoya have now?
  29. 29.There are 4 pink flowers and 10 white flowers. How many flowers are there in all?
  30. 30.6 + 1 + 13 =
  31. 31.1 + ? = 7
  32. 32.There are 10 red balloons and 3 blue balloons. How many balloons are there in all?
  33. 33.There are 5 yellow balls and 13 red balls. How many balls are there in all?
  34. 34.There are 12 yellow balloons and 3 pink balloons. How many balloons are there in all?
  35. 35.2 + 6 + 9 =
  36. 36.Saanvi has 4 balloons and gets 6 balloons more. How many balloons does Saanvi have now?
  37. 37.4 + ? = 10
  38. 38.? + 9 = 13
  39. 39.Zoya has 9 flowers and gets 7 flowers more. How many flowers does Zoya have now?
  40. 40.? + 15 = 18

Answer key

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

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