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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 272 · 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 = 5
  2. 2.? + 9 = 12
  3. 3.Aarav has 13 kites and gets 4 kites more. How many kites does Aarav have now?
  4. 4.2 + 2 =
  5. 5.Rohan has 2 marbles and gets 18 marbles more. How many marbles does Rohan have now?
  6. 6.Kavya has 11 bananas and gets 8 bananas more. How many bananas does Kavya have now?
  7. 7.There are 8 red crayons and 10 green crayons. How many crayons are there in all?
  8. 8.There are 5 blue flowers and 9 yellow flowers. How many flowers are there in all?
  9. 9.1 + ? = 6
  10. 10.There are 6 pink kites and 10 red kites. How many kites are there in all?
  11. 11.Farhan has 13 kites and gets 2 kites more. How many kites does Farhan have now?
  12. 12.3 + 6 + 9 =
  13. 13.Tara has 14 balls and gets 3 balls more. How many balls does Tara have now?
  14. 14.There are 3 white balloons and 12 green balloons. How many balloons are there in all?
  15. 15.Aditya has 10 pencils and gets 3 pencils more. How many pencils does Aditya have now?
  16. 16.There are 2 red beads and 11 blue beads. How many beads are there in all?
  17. 17.10 + 4 =
  18. 18.? + 8 = 17
  19. 19.? + 5 = 15
  20. 20.8 + 7 + 5 =
  21. 21.7 + 1 + 5 =
  22. 22.? + 10 = 11
  23. 23.Sneha has 4 balloons and gets 1 balloon more. How many balloons does Sneha have now?
  24. 24.10 + 8 =
  25. 25.18 + 1 =
  26. 26.13 + ? = 18
  27. 27.6 + 2 =
  28. 28.There are 8 red crayons and 8 blue crayons. How many crayons are there in all?
  29. 29.5 + 4 + 2 =
  30. 30.4 + 4 + 6 =
  31. 31.12 + 6 =
  32. 32.? + 2 = 10
  33. 33.There are 9 white balloons and 7 pink balloons. How many balloons are there in all?
  34. 34.14 + 4 =
  35. 35.Rahul has 3 mangoes and gets 2 mangoes more. How many mangoes does Rahul have now?
  36. 36.1 + 2 + 9 =
  37. 37.8 + 7 =
  38. 38.2 + ? = 3
  39. 39.5 + 12 =
  40. 40.? + 4 = 6

Answer key

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

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