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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 304 · 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. 1.1 + 6 + 11 =
  2. 2.Priya has 14 crayons and gets 4 crayons more. How many crayons does Priya have now?
  3. 3.? + 1 = 4
  4. 4.Ananya has 5 laddoos and gets 5 laddoos more. How many laddoos does Ananya have now?
  5. 5.6 + 7 + 4 =
  6. 6.3 + ? = 6
  7. 7.There are 4 yellow crayons and 16 pink crayons. How many crayons are there in all?
  8. 8.Ishaan has 9 crayons and gets 10 crayons more. How many crayons does Ishaan have now?
  9. 9.There are 12 red balloons and 4 blue balloons. How many balloons are there in all?
  10. 10.3 + ? = 20
  11. 11.Lakshmi has 9 pencils and gets 3 pencils more. How many pencils does Lakshmi have now?
  12. 12.There are 12 red kites and 3 blue kites. How many kites are there in all?
  13. 13.7 + 8 + 1 =
  14. 14.? + 3 = 6
  15. 15.Kavya has 13 balloons and gets 1 balloon more. How many balloons does Kavya have now?
  16. 16.8 + 4 + 6 =
  17. 17.There are 11 pink balls and 2 white balls. How many balls are there in all?
  18. 18.? + 1 = 11
  19. 19.4 + 1 + 2 =
  20. 20.9 + 11 =
  21. 21.Lakshmi has 5 balls and gets 7 balls more. How many balls does Lakshmi have now?
  22. 22.6 + ? = 12
  23. 23.19 + 1 =
  24. 24.11 + ? = 12
  25. 25.There are 12 white kites and 8 yellow kites. How many kites are there in all?
  26. 26.There are 10 green balls and 3 pink balls. How many balls are there in all?
  27. 27.16 + 1 =
  28. 28.There are 5 pink flowers and 9 white flowers. How many flowers are there in all?
  29. 29.1 + 2 + 7 =
  30. 30.1 + 3 + 16 =
  31. 31.1 + ? = 13
  32. 32.8 + 3 + 8 =
  33. 33.Manav has 10 bananas and gets 6 bananas more. How many bananas does Manav have now?
  34. 34.1 + 7 + 1 =
  35. 35.6 + 3 =
  36. 36.? + 2 = 6
  37. 37.11 + 6 =
  38. 38.11 + 1 =
  39. 39.Karan has 9 flowers and gets 5 flowers more. How many flowers does Karan have now?
  40. 40.? + 2 = 5

Answer key

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

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