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Percentage lesson 9: Find the whole from a percent · Set 12 · 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. 1.75% of a number is 6. What is the number?
  2. 2.Isha spent ₹78, which is 20% of the pocket money. How much pocket money did Isha have, in rupees?
  3. 3.18 is 50% of ?
  4. 4.75% of a number is 231. What is the number?
  5. 5.15 is 5% of ?
  6. 6.Anaya spent ₹19, which is 5% of the pocket money. How much pocket money did Anaya have, in rupees?
  7. 7.40% of a number is 104. What is the number?
  8. 8.28 is 10% of ?
  9. 9.48 is 12% of ?
  10. 10.Dev spent ₹69, which is 30% of the pocket money. How much pocket money did Dev have, in rupees?
  11. 11.80% of a number is 32. What is the number?
  12. 12.15% of a number is 18. What is the number?
  13. 13.33 is 12% of ?
  14. 14.Diya spent ₹14, which is 10% of the pocket money. How much pocket money did Diya have, in rupees?
  15. 15.12% of a number is 15. What is the number?
  16. 16.60% of a number is 84. What is the number?
  17. 17.36 is 80% of ?
  18. 18.111 is 75% of ?
  19. 19.25% of a number is 93. What is the number?
  20. 20.248 is 80% of ?
  21. 21.25% of a number is 67. What is the number?
  22. 22.5% of a number is 2. What is the number?
  23. 23.10% of a number is 21. What is the number?
  24. 24.10% of a number is 20. What is the number?
  25. 25.Ishaan spent ₹30, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  26. 26.49 is 25% of ?
  27. 27.Dev spent ₹10, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?
  28. 28.12 is 5% of ?
  29. 29.15 is 10% of ?
  30. 30.3 is 10% of ?
  31. 31.Diya spent ₹4, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  32. 32.8 is 5% of ?
  33. 33.10% of a number is 8. What is the number?
  34. 34.Diya spent ₹96, which is 40% of the pocket money. How much pocket money did Diya have, in rupees?
  35. 35.12% of a number is 45. What is the number?
  36. 36.102 is 60% of ?
  37. 37.Riya spent ₹48, which is 12% of the pocket money. How much pocket money did Riya have, in rupees?
  38. 38.30% of a number is 90. What is the number?
  39. 39.48 is 15% of ?
  40. 40.Dev spent ₹150, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?

Answer key

  1. 8
  2. 390
  3. 36
  4. 308
  5. 300
  6. 380
  7. 260
  8. 280
  9. 400
  10. 230
  11. 40
  12. 120
  13. 275
  14. 140
  15. 125
  16. 140
  17. 45
  18. 148
  19. 372
  20. 310
  21. 268
  22. 40
  23. 210
  24. 200
  25. 150
  26. 196
  27. 25
  28. 240
  29. 150
  30. 30
  31. 8
  32. 160
  33. 80
  34. 240
  35. 375
  36. 170
  37. 400
  38. 300
  39. 320
  40. 375

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