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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 174 · 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 100 =
  2. 2.15% of 280 =
  3. 3.50% of 670 =
  4. 4.10% of 460 =
  5. 5.20% of 670 =
  6. 6.5% of 760 =
  7. 7.20% of 480 =
  8. 8.1% of 610 =
  9. 9.50% of 80 =
  10. 10.5% of 250 =
  11. 11.5% of 870 =
  12. 12.5% of 170 =
  13. 13.50% of 280 =
  14. 14.25% of 90 =
  15. 15.5% of 600 =
  16. 16.50% of 620 =
  17. 17.50% of 300 =
  18. 18.25% of 900 =
  19. 19.20% of 680 =
  20. 20.25% of 250 =
  21. 21.25% of 130 =
  22. 22.10% of 390 =
  23. 23.50% of 380 =
  24. 24.50% of 510 =
  25. 25.25% of 870 =
  26. 26.25% of 50 =
  27. 27.5% of 450 =
  28. 28.5% of 550 =
  29. 29.10% of 430 =
  30. 30.1% of 750 =
  31. 31.10% of 70 =
  32. 32.1% of 230 =
  33. 33.20% of 300 =
  34. 34.1% of 310 =
  35. 35.5% of 210 =
  36. 36.10% of 440 =
  37. 37.5% of 50 =
  38. 38.1% of 110 =
  39. 39.50% of 690 =
  40. 40.20% of 110 =

Answer key

  1. 1
  2. 42
  3. 335
  4. 46
  5. 134
  6. 38
  7. 96
  8. 6.1
  9. 40
  10. 12.5
  11. 43.5
  12. 8.5
  13. 140
  14. 22.5
  15. 30
  16. 310
  17. 150
  18. 225
  19. 136
  20. 62.5
  21. 32.5
  22. 39
  23. 190
  24. 255
  25. 217.5
  26. 12.5
  27. 22.5
  28. 27.5
  29. 43
  30. 7.5
  31. 7
  32. 2.3
  33. 60
  34. 3.1
  35. 10.5
  36. 44
  37. 2.5
  38. 1.1
  39. 345
  40. 22

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