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Percentage lesson 9: Find the whole from a percent · Set 636 · 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. 1.20% of a number is 10. What is the number?
  2. 2.Riya spent ₹132, which is 75% of the pocket money. How much pocket money did Riya have, in rupees?
  3. 3.10% of a number is 14. What is the number?
  4. 4.12 is 20% of ?
  5. 5.12% of a number is 36. What is the number?
  6. 6.74 is 20% of ?
  7. 7.136 is 80% of ?
  8. 8.80% of a number is 16. What is the number?
  9. 9.80% of a number is 220. What is the number?
  10. 10.40% of a number is 24. What is the number?
  11. 11.Diya spent ₹9, which is 60% of the pocket money. How much pocket money did Diya have, in rupees?
  12. 12.12 is 12% of ?
  13. 13.39 is 12% of ?
  14. 14.80% of a number is 72. What is the number?
  15. 15.36 is 15% of ?
  16. 16.50% of a number is 75. What is the number?
  17. 17.15 is 12% of ?
  18. 18.15 is 75% of ?
  19. 19.Meera spent ₹106, which is 40% of the pocket money. How much pocket money did Meera have, in rupees?
  20. 20.Meera spent ₹45, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  21. 21.50% of a number is 121. What is the number?
  22. 22.15% of a number is 15. What is the number?
  23. 23.30 is 50% of ?
  24. 24.67 is 25% of ?
  25. 25.86 is 40% of ?
  26. 26.50% of a number is 200. What is the number?
  27. 27.Arjun spent ₹284, which is 80% of the pocket money. How much pocket money did Arjun have, in rupees?
  28. 28.76 is 40% of ?
  29. 29.7 is 10% of ?
  30. 30.60% of a number is 51. What is the number?
  31. 31.Anaya spent ₹42, which is 25% of the pocket money. How much pocket money did Anaya have, in rupees?
  32. 32.3 is 10% of ?
  33. 33.36 is 60% of ?
  34. 34.80% of a number is 168. What is the number?
  35. 35.Arjun spent ₹62, which is 25% of the pocket money. How much pocket money did Arjun have, in rupees?
  36. 36.Meera spent ₹102, which is 50% of the pocket money. How much pocket money did Meera have, in rupees?
  37. 37.12% of a number is 6. What is the number?
  38. 38.Meera spent ₹21, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  39. 39.15% of a number is 18. What is the number?
  40. 40.30% of a number is 33. What is the number?

Answer key

  1. 50
  2. 176
  3. 140
  4. 60
  5. 300
  6. 370
  7. 170
  8. 20
  9. 275
  10. 60
  11. 15
  12. 100
  13. 325
  14. 90
  15. 240
  16. 150
  17. 125
  18. 20
  19. 265
  20. 375
  21. 242
  22. 100
  23. 60
  24. 268
  25. 215
  26. 400
  27. 355
  28. 190
  29. 70
  30. 85
  31. 168
  32. 30
  33. 60
  34. 210
  35. 248
  36. 204
  37. 50
  38. 140
  39. 120
  40. 110

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