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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 907 · 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. 1.12 + ? = 19
  2. 2.? + 3 = 14
  3. 3.Lakshmi has 9 pencils and gets 3 pencils more. How many pencils does Lakshmi have now?
  4. 4.3 + 3 + 7 =
  5. 5.14 + 3 =
  6. 6.Kavya has 6 kites and gets 9 kites more. How many kites does Kavya have now?
  7. 7.Aditya has 6 balloons and gets 3 balloons more. How many balloons does Aditya have now?
  8. 8.Tara has 11 pencils and gets 2 pencils more. How many pencils does Tara have now?
  9. 9.6 + 5 + 2 =
  10. 10.9 + 7 =
  11. 11.There are 3 blue flowers and 8 green flowers. How many flowers are there in all?
  12. 12.4 + 8 + 7 =
  13. 13.There are 11 white crayons and 2 green crayons. How many crayons are there in all?
  14. 14.7 + 5 + 2 =
  15. 15.11 + ? = 18
  16. 16.Riya has 11 marbles and gets 3 marbles more. How many marbles does Riya have now?
  17. 17.7 + 7 =
  18. 18.7 + 8 =
  19. 19.3 + 7 + 7 =
  20. 20.1 + 1 + 15 =
  21. 21.Gurpreet has 7 pencils and gets 2 pencils more. How many pencils does Gurpreet have now?
  22. 22.Ishaan has 13 books and gets 7 books more. How many books does Ishaan have now?
  23. 23.3 + 6 + 1 =
  24. 24.7 + ? = 13
  25. 25.13 + ? = 14
  26. 26.There are 4 red flowers and 10 white flowers. How many flowers are there in all?
  27. 27.There are 9 white kites and 2 red kites. How many kites are there in all?
  28. 28.6 + 8 + 3 =
  29. 29.9 + 2 =
  30. 30.19 + 1 =
  31. 31.5 + 7 + 8 =
  32. 32.There are 2 yellow kites and 11 red kites. How many kites are there in all?
  33. 33.There are 9 red balloons and 8 blue balloons. How many balloons are there in all?
  34. 34.? + 3 = 5
  35. 35.12 + 8 =
  36. 36.There are 4 green balls and 9 pink balls. How many balls are there in all?
  37. 37.7 + 4 + 4 =
  38. 38.Priya has 6 pencils and gets 11 pencils more. How many pencils does Priya have now?
  39. 39.4 + 3 + 8 =
  40. 40.10 + 6 =

Answer key

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

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