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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 105 · 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.? + 8 = 18
  2. 2.Ananya has 8 bananas and gets 10 bananas more. How many bananas does Ananya have now?
  3. 3.2 + 2 + 10 =
  4. 4.There are 2 blue flowers and 8 red flowers. How many flowers are there in all?
  5. 5.Riya has 14 crayons and gets 6 crayons more. How many crayons does Riya have now?
  6. 6.There are 5 blue flowers and 11 red flowers. How many flowers are there in all?
  7. 7.1 + 1 + 6 =
  8. 8.There are 9 white balloons and 10 pink balloons. How many balloons are there in all?
  9. 9.14 + 5 =
  10. 10.12 + ? = 14
  11. 11.9 + 8 =
  12. 12.There are 3 blue crayons and 16 pink crayons. How many crayons are there in all?
  13. 13.There are 5 green balls and 4 yellow balls. How many balls are there in all?
  14. 14.2 + 15 =
  15. 15.There are 9 yellow balls and 5 red balls. How many balls are there in all?
  16. 16.? + 4 = 12
  17. 17.Sneha has 5 mangoes and gets 12 mangoes more. How many mangoes does Sneha have now?
  18. 18.Rohan has 9 pencils and gets 6 pencils more. How many pencils does Rohan have now?
  19. 19.9 + ? = 20
  20. 20.1 + 1 =
  21. 21.? + 1 = 3
  22. 22.There are 11 white kites and 2 green kites. How many kites are there in all?
  23. 23.2 + ? = 4
  24. 24.2 + 5 =
  25. 25.3 + 16 =
  26. 26.1 + 13 =
  27. 27.Karan has 4 books and gets 16 books more. How many books does Karan have now?
  28. 28.3 + 2 + 15 =
  29. 29.4 + 4 + 1 =
  30. 30.2 + 1 + 16 =
  31. 31.There are 7 white beads and 12 red beads. How many beads are there in all?
  32. 32.Zoya has 7 pencils and gets 4 pencils more. How many pencils does Zoya have now?
  33. 33.3 + ? = 13
  34. 34.4 + ? = 15
  35. 35.There are 9 yellow balls and 5 blue balls. How many balls are there in all?
  36. 36.17 + 1 =
  37. 37.1 + 1 + 11 =
  38. 38.There are 3 yellow kites and 6 red kites. How many kites are there in all?
  39. 39.Riya has 5 flowers and gets 15 flowers more. How many flowers does Riya have now?
  40. 40.? + 1 = 5

Answer key

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

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