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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 462 · 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 + 1 =
  2. 2.5 + 12 =
  3. 3.8 + 9 =
  4. 4.Rahul has 7 balls and gets 7 balls more. How many balls does Rahul have now?
  5. 5.1 + ? = 3
  6. 6.6 + 4 + 2 =
  7. 7.1 + 4 + 4 =
  8. 8.There are 3 green flowers and 6 yellow flowers. How many flowers are there in all?
  9. 9.Ishaan has 3 crayons and gets 1 crayon more. How many crayons does Ishaan have now?
  10. 10.16 + 1 =
  11. 11.7 + 10 =
  12. 12.2 + 4 =
  13. 13.There are 12 red balloons and 8 yellow balloons. How many balloons are there in all?
  14. 14.? + 1 = 7
  15. 15.2 + 5 + 8 =
  16. 16.Ishaan has 11 bananas and gets 6 bananas more. How many bananas does Ishaan have now?
  17. 17.Kabir has 10 bananas and gets 8 bananas more. How many bananas does Kabir have now?
  18. 18.Rohan has 3 mangoes and gets 5 mangoes more. How many mangoes does Rohan have now?
  19. 19.16 + 4 =
  20. 20.Vivaan has 7 crayons and gets 6 crayons more. How many crayons does Vivaan have now?
  21. 21.8 + 2 + 10 =
  22. 22.1 + 6 + 10 =
  23. 23.10 + 8 =
  24. 24.There are 9 pink balls and 5 yellow balls. How many balls are there in all?
  25. 25.6 + 6 + 6 =
  26. 26.1 + 3 + 14 =
  27. 27.Aarav has 5 books and gets 1 book more. How many books does Aarav have now?
  28. 28.There are 2 green kites and 3 pink kites. How many kites are there in all?
  29. 29.11 + 6 =
  30. 30.9 + 1 =
  31. 31.6 + 2 =
  32. 32.? + 13 = 18
  33. 33.There are 4 green crayons and 16 white crayons. How many crayons are there in all?
  34. 34.1 + 6 + 8 =
  35. 35.6 + 5 =
  36. 36.6 + 4 + 7 =
  37. 37.14 + 1 =
  38. 38.2 + 9 =
  39. 39.? + 2 = 17
  40. 40.14 + 3 =

Answer key

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

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