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Percentage lesson 9: Find the whole from a percent · Set 476 · 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 38. What is the number?
  2. 2.25% of a number is 5. What is the number?
  3. 3.5% of a number is 15. What is the number?
  4. 4.20 is 5% of ?
  5. 5.10% of a number is 5. What is the number?
  6. 6.Kabir spent ₹62, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  7. 7.Sara spent ₹120, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?
  8. 8.70 is 50% of ?
  9. 9.78 is 60% of ?
  10. 10.37 is 25% of ?
  11. 11.Dev spent ₹57, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  12. 12.30% of a number is 12. What is the number?
  13. 13.30% of a number is 81. What is the number?
  14. 14.Sara spent ₹66, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?
  15. 15.Dev spent ₹2, which is 5% of the pocket money. How much pocket money did Dev have, in rupees?
  16. 16.25% of a number is 1. What is the number?
  17. 17.30% of a number is 33. What is the number?
  18. 18.Dev spent ₹44, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  19. 19.12 is 80% of ?
  20. 20.Dev spent ₹68, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?
  21. 21.Sara spent ₹180, which is 50% of the pocket money. How much pocket money did Sara have, in rupees?
  22. 22.40 is 40% of ?
  23. 23.Ishaan spent ₹69, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  24. 24.30% of a number is 96. What is the number?
  25. 25.276 is 75% of ?
  26. 26.Riya spent ₹20, which is 5% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.Diya spent ₹52, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  28. 28.80% of a number is 164. What is the number?
  29. 29.25% of a number is 73. What is the number?
  30. 30.20% of a number is 55. What is the number?
  31. 31.50% of a number is 57. What is the number?
  32. 32.75% of a number is 171. What is the number?
  33. 33.20 is 50% of ?
  34. 34.90 is 75% of ?
  35. 35.2 is 5% of ?
  36. 36.60% of a number is 84. What is the number?
  37. 37.59 is 50% of ?
  38. 38.Diya spent ₹42, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  39. 39.260 is 80% of ?
  40. 40.25% of a number is 38. What is the number?

Answer key

  1. 190
  2. 20
  3. 300
  4. 400
  5. 50
  6. 124
  7. 400
  8. 140
  9. 130
  10. 148
  11. 228
  12. 40
  13. 270
  14. 220
  15. 40
  16. 4
  17. 110
  18. 220
  19. 15
  20. 170
  21. 360
  22. 100
  23. 345
  24. 320
  25. 368
  26. 400
  27. 260
  28. 205
  29. 292
  30. 275
  31. 114
  32. 228
  33. 40
  34. 120
  35. 40
  36. 140
  37. 118
  38. 210
  39. 325
  40. 152

Free percentage lessons, practice and worksheets at talentjr.in/how-to-calculate-percentage