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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 794 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.50% of 370 =
  2. 2.10% of 30 =
  3. 3.25% of 90 =
  4. 4.1% of 90 =
  5. 5.25% of 740 =
  6. 6.1% of 890 =
  7. 7.1% of 240 =
  8. 8.15% of 150 =
  9. 9.50% of 130 =
  10. 10.1% of 750 =
  11. 11.10% of 850 =
  12. 12.25% of 690 =
  13. 13.50% of 740 =
  14. 14.25% of 610 =
  15. 15.50% of 210 =
  16. 16.1% of 680 =
  17. 17.5% of 30 =
  18. 18.15% of 20 =
  19. 19.25% of 230 =
  20. 20.15% of 220 =
  21. 21.5% of 370 =
  22. 22.1% of 550 =
  23. 23.5% of 230 =
  24. 24.1% of 310 =
  25. 25.25% of 730 =
  26. 26.1% of 510 =
  27. 27.10% of 700 =
  28. 28.5% of 540 =
  29. 29.1% of 40 =
  30. 30.5% of 190 =
  31. 31.20% of 220 =
  32. 32.1% of 540 =
  33. 33.5% of 410 =
  34. 34.50% of 470 =
  35. 35.5% of 550 =
  36. 36.10% of 640 =
  37. 37.15% of 760 =
  38. 38.10% of 760 =
  39. 39.5% of 470 =
  40. 40.5% of 390 =

Answer key

  1. 185
  2. 3
  3. 22.5
  4. 0.9
  5. 185
  6. 8.9
  7. 2.4
  8. 22.5
  9. 65
  10. 7.5
  11. 85
  12. 172.5
  13. 370
  14. 152.5
  15. 105
  16. 6.8
  17. 1.5
  18. 3
  19. 57.5
  20. 33
  21. 18.5
  22. 5.5
  23. 11.5
  24. 3.1
  25. 182.5
  26. 5.1
  27. 70
  28. 27
  29. 0.4
  30. 9.5
  31. 44
  32. 5.4
  33. 20.5
  34. 235
  35. 27.5
  36. 64
  37. 114
  38. 76
  39. 23.5
  40. 19.5

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