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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 206 · 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. 1.10% of 50 =
  2. 2.50% of 750 =
  3. 3.1% of 180 =
  4. 4.5% of 350 =
  5. 5.15% of 170 =
  6. 6.25% of 540 =
  7. 7.1% of 230 =
  8. 8.15% of 40 =
  9. 9.1% of 280 =
  10. 10.5% of 310 =
  11. 11.15% of 720 =
  12. 12.25% of 720 =
  13. 13.20% of 590 =
  14. 14.50% of 160 =
  15. 15.5% of 140 =
  16. 16.5% of 410 =
  17. 17.50% of 850 =
  18. 18.15% of 600 =
  19. 19.1% of 490 =
  20. 20.10% of 210 =
  21. 21.25% of 130 =
  22. 22.25% of 210 =
  23. 23.50% of 210 =
  24. 24.15% of 330 =
  25. 25.50% of 30 =
  26. 26.10% of 190 =
  27. 27.15% of 140 =
  28. 28.5% of 710 =
  29. 29.5% of 820 =
  30. 30.5% of 100 =
  31. 31.20% of 540 =
  32. 32.20% of 470 =
  33. 33.5% of 470 =
  34. 34.15% of 520 =
  35. 35.10% of 440 =
  36. 36.5% of 30 =
  37. 37.10% of 660 =
  38. 38.10% of 630 =
  39. 39.5% of 50 =
  40. 40.20% of 600 =

Answer key

  1. 5
  2. 375
  3. 1.8
  4. 17.5
  5. 25.5
  6. 135
  7. 2.3
  8. 6
  9. 2.8
  10. 15.5
  11. 108
  12. 180
  13. 118
  14. 80
  15. 7
  16. 20.5
  17. 425
  18. 90
  19. 4.9
  20. 21
  21. 32.5
  22. 52.5
  23. 105
  24. 49.5
  25. 15
  26. 19
  27. 21
  28. 35.5
  29. 41
  30. 5
  31. 108
  32. 94
  33. 23.5
  34. 78
  35. 44
  36. 1.5
  37. 66
  38. 63
  39. 2.5
  40. 120

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