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Percentage lesson 9: Find the whole from a percent · Set 406 · 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. 1.40% of a number is 104. What is the number?
  2. 2.Meera spent ₹18, which is 5% of the pocket money. How much pocket money did Meera have, in rupees?
  3. 3.12% of a number is 33. What is the number?
  4. 4.Anaya spent ₹40, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  5. 5.40% of a number is 106. What is the number?
  6. 6.20% of a number is 12. What is the number?
  7. 7.24 is 30% of ?
  8. 8.Arjun spent ₹10, which is 40% of the pocket money. How much pocket money did Arjun have, in rupees?
  9. 9.9 is 5% of ?
  10. 10.18 is 5% of ?
  11. 11.50% of a number is 131. What is the number?
  12. 12.40% of a number is 102. What is the number?
  13. 13.Sara spent ₹14, which is 50% of the pocket money. How much pocket money did Sara have, in rupees?
  14. 14.18 is 15% of ?
  15. 15.Rohan spent ₹59, which is 20% of the pocket money. How much pocket money did Rohan have, in rupees?
  16. 16.4 is 40% of ?
  17. 17.20% of a number is 80. What is the number?
  18. 18.126 is 60% of ?
  19. 19.12% of a number is 9. What is the number?
  20. 20.62 is 20% of ?
  21. 21.279 is 75% of ?
  22. 22.40% of a number is 16. What is the number?
  23. 23.Sara spent ₹34, which is 50% of the pocket money. How much pocket money did Sara have, in rupees?
  24. 24.12% of a number is 24. What is the number?
  25. 25.Rohan spent ₹39, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  26. 26.30% of a number is 39. What is the number?
  27. 27.15% of a number is 48. What is the number?
  28. 28.75% of a number is 30. What is the number?
  29. 29.5% of a number is 2. What is the number?
  30. 30.9 is 75% of ?
  31. 31.Meera spent ₹30, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  32. 32.80% of a number is 208. What is the number?
  33. 33.30 is 15% of ?
  34. 34.41 is 20% of ?
  35. 35.Dev spent ₹11, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  36. 36.50% of a number is 72. What is the number?
  37. 37.60 is 15% of ?
  38. 38.10% of a number is 30. What is the number?
  39. 39.6 is 15% of ?
  40. 40.Arjun spent ₹32, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?

Answer key

  1. 260
  2. 360
  3. 275
  4. 200
  5. 265
  6. 60
  7. 80
  8. 25
  9. 180
  10. 360
  11. 262
  12. 255
  13. 28
  14. 120
  15. 295
  16. 10
  17. 400
  18. 210
  19. 75
  20. 310
  21. 372
  22. 40
  23. 68
  24. 200
  25. 260
  26. 130
  27. 320
  28. 40
  29. 40
  30. 12
  31. 250
  32. 260
  33. 200
  34. 205
  35. 44
  36. 144
  37. 400
  38. 300
  39. 40
  40. 160

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