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Percentage lesson 9: Find the whole from a percent · Set 174 · 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. 1.5% of a number is 14. What is the number?
  2. 2.75% of a number is 255. What is the number?
  3. 3.34 is 10% of ?
  4. 4.13 is 5% of ?
  5. 5.Sara spent ₹15, which is 10% of the pocket money. How much pocket money did Sara have, in rupees?
  6. 6.Dev spent ₹9, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  7. 7.80% of a number is 36. What is the number?
  8. 8.9 is 15% of ?
  9. 9.60% of a number is 135. What is the number?
  10. 10.30% of a number is 21. What is the number?
  11. 11.27 is 60% of ?
  12. 12.24 is 10% of ?
  13. 13.50% of a number is 122. What is the number?
  14. 14.57 is 15% of ?
  15. 15.Anaya spent ₹21, which is 12% of the pocket money. How much pocket money did Anaya have, in rupees?
  16. 16.50% of a number is 179. What is the number?
  17. 17.12% of a number is 9. What is the number?
  18. 18.70 is 20% of ?
  19. 19.30% of a number is 72. What is the number?
  20. 20.15% of a number is 21. What is the number?
  21. 21.20 is 5% of ?
  22. 22.25% of a number is 96. What is the number?
  23. 23.228 is 80% of ?
  24. 24.Anaya spent ₹42, which is 60% of the pocket money. How much pocket money did Anaya have, in rupees?
  25. 25.50% of a number is 150. What is the number?
  26. 26.Kabir spent ₹75, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  27. 27.Ishaan spent ₹90, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  28. 28.20 is 80% of ?
  29. 29.30 is 15% of ?
  30. 30.Dev spent ₹5, which is 5% of the pocket money. How much pocket money did Dev have, in rupees?
  31. 31.20% of a number is 72. What is the number?
  32. 32.192 is 50% of ?
  33. 33.32 is 40% of ?
  34. 34.40% of a number is 10. What is the number?
  35. 35.Ishaan spent ₹130, which is 40% of the pocket money. How much pocket money did Ishaan have, in rupees?
  36. 36.Ishaan spent ₹24, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  37. 37.75% of a number is 288. What is the number?
  38. 38.Kabir spent ₹18, which is 12% of the pocket money. How much pocket money did Kabir have, in rupees?
  39. 39.20% of a number is 34. What is the number?
  40. 40.Ishaan spent ₹63, which is 60% of the pocket money. How much pocket money did Ishaan have, in rupees?

Answer key

  1. 280
  2. 340
  3. 340
  4. 260
  5. 150
  6. 36
  7. 45
  8. 60
  9. 225
  10. 70
  11. 45
  12. 240
  13. 244
  14. 380
  15. 175
  16. 358
  17. 75
  18. 350
  19. 240
  20. 140
  21. 400
  22. 384
  23. 285
  24. 70
  25. 300
  26. 375
  27. 300
  28. 25
  29. 200
  30. 100
  31. 360
  32. 384
  33. 80
  34. 25
  35. 325
  36. 200
  37. 384
  38. 150
  39. 170
  40. 105

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