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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 189 · 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. 1.15% of 60 =
  2. 2.10% of 560 =
  3. 3.10% of 300 =
  4. 4.1% of 610 =
  5. 5.15% of 890 =
  6. 6.20% of 660 =
  7. 7.15% of 180 =
  8. 8.50% of 510 =
  9. 9.10% of 40 =
  10. 10.1% of 420 =
  11. 11.20% of 330 =
  12. 12.50% of 700 =
  13. 13.5% of 270 =
  14. 14.20% of 510 =
  15. 15.20% of 690 =
  16. 16.20% of 370 =
  17. 17.5% of 320 =
  18. 18.15% of 220 =
  19. 19.10% of 170 =
  20. 20.25% of 50 =
  21. 21.50% of 460 =
  22. 22.5% of 560 =
  23. 23.50% of 830 =
  24. 24.50% of 810 =
  25. 25.25% of 50 =
  26. 26.10% of 850 =
  27. 27.25% of 310 =
  28. 28.25% of 800 =
  29. 29.1% of 690 =
  30. 30.1% of 570 =
  31. 31.20% of 210 =
  32. 32.25% of 340 =
  33. 33.20% of 630 =
  34. 34.1% of 530 =
  35. 35.20% of 380 =
  36. 36.25% of 640 =
  37. 37.50% of 610 =
  38. 38.25% of 850 =
  39. 39.25% of 760 =
  40. 40.5% of 370 =

Answer key

  1. 9
  2. 56
  3. 30
  4. 6.1
  5. 133.5
  6. 132
  7. 27
  8. 255
  9. 4
  10. 4.2
  11. 66
  12. 350
  13. 13.5
  14. 102
  15. 138
  16. 74
  17. 16
  18. 33
  19. 17
  20. 12.5
  21. 230
  22. 28
  23. 415
  24. 405
  25. 12.5
  26. 85
  27. 77.5
  28. 200
  29. 6.9
  30. 5.7
  31. 42
  32. 85
  33. 126
  34. 5.3
  35. 76
  36. 160
  37. 305
  38. 212.5
  39. 190
  40. 18.5

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