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Percentage lesson 9: Find the whole from a percent · Set 138 · 40 questions
TalentJR

How to work it out (Back to 100%): Write what you know: p% is a. The whole (100%) = a × 100 ÷ p. Check: p% of your answer must give a back.

NameDateTime takenScore ___ / 40
  1. 1.80% of a number is 160. What is the number?
  2. 2.12% of a number is 18. What is the number?
  3. 3.20% of a number is 71. What is the number?
  4. 4.Kabir spent ₹184, which is 80% of the pocket money. How much pocket money did Kabir have, in rupees?
  5. 5.102 is 30% of ?
  6. 6.10% of a number is 17. What is the number?
  7. 7.30% of a number is 6. What is the number?
  8. 8.12% of a number is 27. What is the number?
  9. 9.180 is 60% of ?
  10. 10.30% of a number is 3. What is the number?
  11. 11.3 is 5% of ?
  12. 12.145 is 50% of ?
  13. 13.Riya spent ₹273, which is 75% of the pocket money. How much pocket money did Riya have, in rupees?
  14. 14.12% of a number is 24. What is the number?
  15. 15.42 is 25% of ?
  16. 16.Meera spent ₹60, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  17. 17.20% of a number is 24. What is the number?
  18. 18.5% of a number is 15. What is the number?
  19. 19.10% of a number is 2. What is the number?
  20. 20.Sara spent ₹284, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  21. 21.80% of a number is 56. What is the number?
  22. 22.34 is 20% of ?
  23. 23.40% of a number is 158. What is the number?
  24. 24.5% of a number is 5. What is the number?
  25. 25.18 is 12% of ?
  26. 26.Riya spent ₹37, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.60% of a number is 42. What is the number?
  28. 28.58 is 40% of ?
  29. 29.75 is 30% of ?
  30. 30.Sara spent ₹60, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?
  31. 31.60% of a number is 15. What is the number?
  32. 32.Ishaan spent ₹84, which is 60% of the pocket money. How much pocket money did Ishaan have, in rupees?
  33. 33.40% of a number is 32. What is the number?
  34. 34.59 is 20% of ?
  35. 35.33 is 10% of ?
  36. 36.Meera spent ₹81, which is 75% of the pocket money. How much pocket money did Meera have, in rupees?
  37. 37.25% of a number is 10. What is the number?
  38. 38.Ishaan spent ₹28, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  39. 39.Aarav spent ₹3, which is 30% of the pocket money. How much pocket money did Aarav have, in rupees?
  40. 40.7 is 25% of ?

Answer key

  1. 200
  2. 150
  3. 355
  4. 230
  5. 340
  6. 170
  7. 20
  8. 225
  9. 300
  10. 10
  11. 60
  12. 290
  13. 364
  14. 200
  15. 168
  16. 200
  17. 120
  18. 300
  19. 20
  20. 355
  21. 70
  22. 170
  23. 395
  24. 100
  25. 150
  26. 370
  27. 70
  28. 145
  29. 250
  30. 200
  31. 25
  32. 140
  33. 80
  34. 295
  35. 330
  36. 108
  37. 40
  38. 140
  39. 10
  40. 28

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