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Percentage lesson 9: Find the whole from a percent · Set 97 · 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.Diya spent ₹57, which is 15% of the pocket money. How much pocket money did Diya have, in rupees?
  2. 2.10% of a number is 30. What is the number?
  3. 3.Riya spent ₹58, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  4. 4.60% of a number is 12. What is the number?
  5. 5.15% of a number is 36. What is the number?
  6. 6.Kabir spent ₹27, which is 12% of the pocket money. How much pocket money did Kabir have, in rupees?
  7. 7.50% of a number is 21. What is the number?
  8. 8.10% of a number is 32. What is the number?
  9. 9.Aarav spent ₹129, which is 75% of the pocket money. How much pocket money did Aarav have, in rupees?
  10. 10.60% of a number is 228. What is the number?
  11. 11.144 is 80% of ?
  12. 12.99 is 60% of ?
  13. 13.27 is 75% of ?
  14. 14.10% of a number is 34. What is the number?
  15. 15.5% of a number is 12. What is the number?
  16. 16.Riya spent ₹225, which is 60% of the pocket money. How much pocket money did Riya have, in rupees?
  17. 17.Aarav spent ₹21, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  18. 18.Isha spent ₹204, which is 60% of the pocket money. How much pocket money did Isha have, in rupees?
  19. 19.Rohan spent ₹39, which is 75% of the pocket money. How much pocket money did Rohan have, in rupees?
  20. 20.20% of a number is 23. What is the number?
  21. 21.50 is 20% of ?
  22. 22.5% of a number is 18. What is the number?
  23. 23.Isha spent ₹165, which is 60% of the pocket money. How much pocket money did Isha have, in rupees?
  24. 24.Ishaan spent ₹20, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  25. 25.Aarav spent ₹58, which is 40% of the pocket money. How much pocket money did Aarav have, in rupees?
  26. 26.50 is 25% of ?
  27. 27.Anaya spent ₹7, which is 5% of the pocket money. How much pocket money did Anaya have, in rupees?
  28. 28.Riya spent ₹60, which is 30% of the pocket money. How much pocket money did Riya have, in rupees?
  29. 29.Rohan spent ₹24, which is 12% of the pocket money. How much pocket money did Rohan have, in rupees?
  30. 30.Arjun spent ₹138, which is 50% of the pocket money. How much pocket money did Arjun have, in rupees?
  31. 31.25% of a number is 26. What is the number?
  32. 32.156 is 75% of ?
  33. 33.40% of a number is 34. What is the number?
  34. 34.40% of a number is 28. What is the number?
  35. 35.30% of a number is 102. What is the number?
  36. 36.33 is 10% of ?
  37. 37.Sara spent ₹255, which is 75% of the pocket money. How much pocket money did Sara have, in rupees?
  38. 38.44 is 40% of ?
  39. 39.Diya spent ₹30, which is 60% of the pocket money. How much pocket money did Diya have, in rupees?
  40. 40.Diya spent ₹156, which is 60% of the pocket money. How much pocket money did Diya have, in rupees?

Answer key

  1. 380
  2. 300
  3. 290
  4. 20
  5. 240
  6. 225
  7. 42
  8. 320
  9. 172
  10. 380
  11. 180
  12. 165
  13. 36
  14. 340
  15. 240
  16. 375
  17. 140
  18. 340
  19. 52
  20. 115
  21. 250
  22. 360
  23. 275
  24. 400
  25. 145
  26. 200
  27. 140
  28. 200
  29. 200
  30. 276
  31. 104
  32. 208
  33. 85
  34. 70
  35. 340
  36. 330
  37. 340
  38. 110
  39. 50
  40. 260

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