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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 587 · 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. 1.4 + ? = 15
  2. 2.Karan has 10 laddoos and gets 1 laddoo more. How many laddoos does Karan have now?
  3. 3.Riya has 8 books and gets 4 books more. How many books does Riya have now?
  4. 4.Kavya has 7 shells and gets 10 shells more. How many shells does Kavya have now?
  5. 5.2 + 8 + 2 =
  6. 6.Karan has 7 crayons and gets 6 crayons more. How many crayons does Karan have now?
  7. 7.There are 9 red kites and 3 yellow kites. How many kites are there in all?
  8. 8.There are 5 red flowers and 5 blue flowers. How many flowers are there in all?
  9. 9.4 + ? = 6
  10. 10.Meera has 10 mangoes and gets 3 mangoes more. How many mangoes does Meera have now?
  11. 11.5 + 4 + 8 =
  12. 12.? + 1 = 6
  13. 13.Isha has 14 bananas and gets 4 bananas more. How many bananas does Isha have now?
  14. 14.1 + ? = 7
  15. 15.8 + ? = 14
  16. 16.19 + 1 =
  17. 17.There are 9 white kites and 10 blue kites. How many kites are there in all?
  18. 18.3 + 5 =
  19. 19.6 + 2 + 5 =
  20. 20.5 + 1 + 7 =
  21. 21.? + 10 = 12
  22. 22.8 + 5 =
  23. 23.15 + 1 =
  24. 24.6 + ? = 11
  25. 25.There are 6 green balls and 10 blue balls. How many balls are there in all?
  26. 26.Karan has 9 mangoes and gets 1 mango more. How many mangoes does Karan have now?
  27. 27.There are 6 blue flowers and 13 green flowers. How many flowers are there in all?
  28. 28.9 + 8 =
  29. 29.2 + ? = 5
  30. 30.5 + 3 + 4 =
  31. 31.Joseph has 13 crayons and gets 7 crayons more. How many crayons does Joseph have now?
  32. 32.Lakshmi has 2 bananas and gets 12 bananas more. How many bananas does Lakshmi have now?
  33. 33.Diya has 6 balls and gets 6 balls more. How many balls does Diya have now?
  34. 34.? + 11 = 13
  35. 35.2 + ? = 3
  36. 36.? + 9 = 10
  37. 37.There are 6 green balloons and 11 red balloons. How many balloons are there in all?
  38. 38.13 + ? = 16
  39. 39.4 + ? = 19
  40. 40.6 + 3 =

Answer key

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

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