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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 580 · 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.? + 9 = 13
  2. 2.3 + 5 + 3 =
  3. 3.9 + ? = 16
  4. 4.There are 4 blue flowers and 10 red flowers. How many flowers are there in all?
  5. 5.? + 3 = 14
  6. 6.18 + ? = 20
  7. 7.Nisha has 2 flowers and gets 14 flowers more. How many flowers does Nisha have now?
  8. 8.? + 2 = 13
  9. 9.? + 1 = 13
  10. 10.There are 8 red balls and 11 green balls. How many balls are there in all?
  11. 11.3 + ? = 6
  12. 12.Aarav has 13 bananas and gets 4 bananas more. How many bananas does Aarav have now?
  13. 13.1 + 6 + 1 =
  14. 14.4 + 3 + 13 =
  15. 15.1 + ? = 4
  16. 16.Rohan has 2 balloons and gets 4 balloons more. How many balloons does Rohan have now?
  17. 17.2 + 3 + 7 =
  18. 18.Diya has 7 laddoos and gets 9 laddoos more. How many laddoos does Diya have now?
  19. 19.Farhan has 14 kites and gets 2 kites more. How many kites does Farhan have now?
  20. 20.3 + 7 + 1 =
  21. 21.2 + 2 =
  22. 22.? + 2 = 11
  23. 23.11 + 1 =
  24. 24.There are 11 white balls and 5 red balls. How many balls are there in all?
  25. 25.4 + 3 + 8 =
  26. 26.There are 9 white crayons and 5 pink crayons. How many crayons are there in all?
  27. 27.7 + 13 =
  28. 28.2 + 8 + 3 =
  29. 29.Aditya has 6 pencils and gets 4 pencils more. How many pencils does Aditya have now?
  30. 30.1 + 3 + 12 =
  31. 31.Zoya has 11 flowers and gets 6 flowers more. How many flowers does Zoya have now?
  32. 32.2 + 7 + 1 =
  33. 33.3 + 7 =
  34. 34.16 + 1 =
  35. 35.19 + 1 =
  36. 36.3 + 5 + 1 =
  37. 37.12 + 3 =
  38. 38.13 + 6 =
  39. 39.Dev has 11 shells and gets 1 shell more. How many shells does Dev have now?
  40. 40.Kavya has 2 balls and gets 16 balls more. How many balls does Kavya have now?

Answer key

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

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