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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 94 · 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. 1.1% of 730 =
  2. 2.25% of 190 =
  3. 3.10% of 430 =
  4. 4.5% of 500 =
  5. 5.50% of 140 =
  6. 6.20% of 720 =
  7. 7.10% of 790 =
  8. 8.5% of 110 =
  9. 9.15% of 630 =
  10. 10.15% of 270 =
  11. 11.20% of 600 =
  12. 12.20% of 240 =
  13. 13.50% of 370 =
  14. 14.50% of 430 =
  15. 15.15% of 350 =
  16. 16.15% of 540 =
  17. 17.20% of 880 =
  18. 18.25% of 470 =
  19. 19.25% of 170 =
  20. 20.5% of 660 =
  21. 21.25% of 690 =
  22. 22.10% of 290 =
  23. 23.20% of 410 =
  24. 24.25% of 300 =
  25. 25.25% of 590 =
  26. 26.1% of 140 =
  27. 27.10% of 260 =
  28. 28.20% of 870 =
  29. 29.25% of 890 =
  30. 30.15% of 70 =
  31. 31.10% of 210 =
  32. 32.15% of 610 =
  33. 33.50% of 260 =
  34. 34.10% of 560 =
  35. 35.1% of 70 =
  36. 36.25% of 280 =
  37. 37.25% of 500 =
  38. 38.25% of 110 =
  39. 39.10% of 350 =
  40. 40.50% of 890 =

Answer key

  1. 7.3
  2. 47.5
  3. 43
  4. 25
  5. 70
  6. 144
  7. 79
  8. 5.5
  9. 94.5
  10. 40.5
  11. 120
  12. 48
  13. 185
  14. 215
  15. 52.5
  16. 81
  17. 176
  18. 117.5
  19. 42.5
  20. 33
  21. 172.5
  22. 29
  23. 82
  24. 75
  25. 147.5
  26. 1.4
  27. 26
  28. 174
  29. 222.5
  30. 10.5
  31. 21
  32. 91.5
  33. 130
  34. 56
  35. 0.7
  36. 70
  37. 125
  38. 27.5
  39. 35
  40. 445

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