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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 283 · 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.Diya has 11 marbles and gets 2 marbles more. How many marbles does Diya have now?
  2. 2.1 + 7 + 3 =
  3. 3.17 + 1 =
  4. 4.There are 8 white flowers and 12 blue flowers. How many flowers are there in all?
  5. 5.1 + ? = 19
  6. 6.There are 11 blue flowers and 5 white flowers. How many flowers are there in all?
  7. 7.There are 12 red kites and 5 blue kites. How many kites are there in all?
  8. 8.Priya has 4 balls and gets 1 ball more. How many balls does Priya have now?
  9. 9.17 + 2 =
  10. 10.Rahul has 3 balloons and gets 2 balloons more. How many balloons does Rahul have now?
  11. 11.13 + 1 =
  12. 12.18 + 2 =
  13. 13.4 + 2 =
  14. 14.Aditya has 9 flowers and gets 11 flowers more. How many flowers does Aditya have now?
  15. 15.5 + 12 =
  16. 16.2 + 13 =
  17. 17.3 + 4 + 6 =
  18. 18.6 + ? = 16
  19. 19.Karan has 12 kites and gets 2 kites more. How many kites does Karan have now?
  20. 20.2 + 17 =
  21. 21.6 + 12 =
  22. 22.1 + ? = 3
  23. 23.There are 2 blue kites and 17 pink kites. How many kites are there in all?
  24. 24.16 + 1 =
  25. 25.? + 5 = 7
  26. 26.There are 2 green flowers and 4 yellow flowers. How many flowers are there in all?
  27. 27.There are 12 blue crayons and 5 white crayons. How many crayons are there in all?
  28. 28.Zoya has 8 flowers and gets 7 flowers more. How many flowers does Zoya have now?
  29. 29.19 + 1 =
  30. 30.2 + 6 + 4 =
  31. 31.There are 4 red flowers and 12 white flowers. How many flowers are there in all?
  32. 32.5 + 1 + 3 =
  33. 33.? + 3 = 6
  34. 34.8 + 11 =
  35. 35.? + 1 = 12
  36. 36.3 + ? = 16
  37. 37.Meera has 4 pencils and gets 4 pencils more. How many pencils does Meera have now?
  38. 38.? + 7 = 11
  39. 39.2 + 8 + 2 =
  40. 40.There are 2 red balls and 9 blue balls. How many balls are there in all?

Answer key

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

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