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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 962 · 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.There are 9 green crayons and 5 pink crayons. How many crayons are there in all?
  2. 2.Rahul has 13 pencils and gets 2 pencils more. How many pencils does Rahul have now?
  3. 3.4 + 4 + 5 =
  4. 4.Lakshmi has 7 kites and gets 13 kites more. How many kites does Lakshmi have now?
  5. 5.2 + 5 + 3 =
  6. 6.There are 3 blue flowers and 7 green flowers. How many flowers are there in all?
  7. 7.There are 4 yellow balloons and 11 blue balloons. How many balloons are there in all?
  8. 8.Diya has 2 mangoes and gets 13 mangoes more. How many mangoes does Diya have now?
  9. 9.6 + ? = 10
  10. 10.There are 11 red flowers and 2 white flowers. How many flowers are there in all?
  11. 11.16 + 1 =
  12. 12.4 + 5 =
  13. 13.11 + ? = 19
  14. 14.14 + ? = 18
  15. 15.1 + 7 + 7 =
  16. 16.5 + ? = 15
  17. 17.5 + 2 + 6 =
  18. 18.12 + 2 =
  19. 19.12 + 5 =
  20. 20.14 + 1 =
  21. 21.Diya has 8 books and gets 12 books more. How many books does Diya have now?
  22. 22.3 + 1 + 4 =
  23. 23.1 + 2 + 1 =
  24. 24.2 + ? = 18
  25. 25.Ishaan has 4 laddoos and gets 15 laddoos more. How many laddoos does Ishaan have now?
  26. 26.Manav has 11 books and gets 9 books more. How many books does Manav have now?
  27. 27.There are 8 red flowers and 2 blue flowers. How many flowers are there in all?
  28. 28.? + 3 = 10
  29. 29.Dev has 5 kites and gets 9 kites more. How many kites does Dev have now?
  30. 30.? + 2 = 14
  31. 31.Aditya has 4 balloons and gets 2 balloons more. How many balloons does Aditya have now?
  32. 32.7 + 3 + 8 =
  33. 33.? + 15 = 20
  34. 34.17 + 3 =
  35. 35.15 + 2 =
  36. 36.? + 2 = 12
  37. 37.5 + ? = 7
  38. 38.3 + ? = 6
  39. 39.? + 2 = 6
  40. 40.3 + 13 =

Answer key

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

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