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Percentage lesson 9: Find the whole from a percent · Set 494 · 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.

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  1. 1.75% of a number is 183. What is the number?
  2. 2.Ishaan spent ₹84, which is 80% of the pocket money. How much pocket money did Ishaan have, in rupees?
  3. 3.Riya spent ₹8, which is 40% of the pocket money. How much pocket money did Riya have, in rupees?
  4. 4.5% of a number is 9. What is the number?
  5. 5.Isha spent ₹68, which is 80% of the pocket money. How much pocket money did Isha have, in rupees?
  6. 6.Diya spent ₹130, which is 40% of the pocket money. How much pocket money did Diya have, in rupees?
  7. 7.Dev spent ₹138, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  8. 8.75% of a number is 159. What is the number?
  9. 9.10% of a number is 28. What is the number?
  10. 10.9 is 12% of ?
  11. 11.Ishaan spent ₹3, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  12. 12.5% of a number is 6. What is the number?
  13. 13.Rohan spent ₹102, which is 30% of the pocket money. How much pocket money did Rohan have, in rupees?
  14. 14.Diya spent ₹114, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  15. 15.Arjun spent ₹58, which is 50% of the pocket money. How much pocket money did Arjun have, in rupees?
  16. 16.Sara spent ₹34, which is 20% of the pocket money. How much pocket money did Sara have, in rupees?
  17. 17.1 is 50% of ?
  18. 18.75% of a number is 135. What is the number?
  19. 19.Ishaan spent ₹102, which is 40% of the pocket money. How much pocket money did Ishaan have, in rupees?
  20. 20.Dev spent ₹3, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  21. 21.2 is 10% of ?
  22. 22.24 is 15% of ?
  23. 23.Isha spent ₹61, which is 25% of the pocket money. How much pocket money did Isha have, in rupees?
  24. 24.Riya spent ₹64, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  25. 25.132 is 60% of ?
  26. 26.Diya spent ₹12, which is 15% of the pocket money. How much pocket money did Diya have, in rupees?
  27. 27.25% of a number is 41. What is the number?
  28. 28.9 is 50% of ?
  29. 29.20% of a number is 38. What is the number?
  30. 30.50% of a number is 66. What is the number?
  31. 31.Anaya spent ₹231, which is 60% of the pocket money. How much pocket money did Anaya have, in rupees?
  32. 32.8 is 10% of ?
  33. 33.15% of a number is 60. What is the number?
  34. 34.Diya spent ₹84, which is 75% of the pocket money. How much pocket money did Diya have, in rupees?
  35. 35.10% of a number is 26. What is the number?
  36. 36.12% of a number is 39. What is the number?
  37. 37.Arjun spent ₹18, which is 5% of the pocket money. How much pocket money did Arjun have, in rupees?
  38. 38.40% of a number is 134. What is the number?
  39. 39.Anaya spent ₹31, which is 25% of the pocket money. How much pocket money did Anaya have, in rupees?
  40. 40.Sara spent ₹33, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?

Answer key

  1. 244
  2. 105
  3. 20
  4. 180
  5. 85
  6. 325
  7. 230
  8. 212
  9. 280
  10. 75
  11. 60
  12. 120
  13. 340
  14. 228
  15. 116
  16. 170
  17. 2
  18. 180
  19. 255
  20. 5
  21. 20
  22. 160
  23. 244
  24. 320
  25. 220
  26. 80
  27. 164
  28. 18
  29. 190
  30. 132
  31. 385
  32. 80
  33. 400
  34. 112
  35. 260
  36. 325
  37. 360
  38. 335
  39. 124
  40. 110

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