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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 599 · 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.? + 7 = 12
  2. 2.1 + ? = 4
  3. 3.? + 15 = 16
  4. 4.Aarav has 5 balls and gets 6 balls more. How many balls does Aarav have now?
  5. 5.? + 4 = 8
  6. 6.3 + 10 =
  7. 7.18 + 2 =
  8. 8.5 + 8 + 5 =
  9. 9.4 + 8 + 2 =
  10. 10.6 + 7 + 1 =
  11. 11.1 + 15 =
  12. 12.Rahul has 9 shells and gets 2 shells more. How many shells does Rahul have now?
  13. 13.Zoya has 2 mangoes and gets 4 mangoes more. How many mangoes does Zoya have now?
  14. 14.8 + 3 =
  15. 15.17 + 3 =
  16. 16.1 + 9 =
  17. 17.9 + ? = 11
  18. 18.8 + 10 =
  19. 19.Saanvi has 8 bananas and gets 2 bananas more. How many bananas does Saanvi have now?
  20. 20.6 + 4 =
  21. 21.Farhan has 11 crayons and gets 6 crayons more. How many crayons does Farhan have now?
  22. 22.Priya has 8 laddoos and gets 4 laddoos more. How many laddoos does Priya have now?
  23. 23.Saanvi has 12 laddoos and gets 3 laddoos more. How many laddoos does Saanvi have now?
  24. 24.Priya has 3 shells and gets 14 shells more. How many shells does Priya have now?
  25. 25.Lakshmi has 5 pencils and gets 12 pencils more. How many pencils does Lakshmi have now?
  26. 26.Vivaan has 4 books and gets 5 books more. How many books does Vivaan have now?
  27. 27.? + 1 = 9
  28. 28.There are 3 blue flowers and 10 yellow flowers. How many flowers are there in all?
  29. 29.Gurpreet has 3 laddoos and gets 3 laddoos more. How many laddoos does Gurpreet have now?
  30. 30.Zoya has 6 balls and gets 5 balls more. How many balls does Zoya have now?
  31. 31.Priya has 9 mangoes and gets 1 mango more. How many mangoes does Priya have now?
  32. 32.There are 9 yellow balloons and 2 green balloons. How many balloons are there in all?
  33. 33.8 + ? = 20
  34. 34.There are 12 red kites and 3 blue kites. How many kites are there in all?
  35. 35.There are 6 white beads and 5 blue beads. How many beads are there in all?
  36. 36.8 + ? = 15
  37. 37.3 + 7 + 6 =
  38. 38.Kabir has 6 pencils and gets 3 pencils more. How many pencils does Kabir have now?
  39. 39.6 + 5 + 3 =
  40. 40.6 + 13 =

Answer key

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

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