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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 266 · 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. 1.25% of 150 =
  2. 2.25% of 890 =
  3. 3.20% of 780 =
  4. 4.10% of 690 =
  5. 5.15% of 500 =
  6. 6.25% of 30 =
  7. 7.20% of 450 =
  8. 8.50% of 740 =
  9. 9.1% of 20 =
  10. 10.50% of 470 =
  11. 11.15% of 770 =
  12. 12.10% of 20 =
  13. 13.5% of 680 =
  14. 14.10% of 820 =
  15. 15.10% of 850 =
  16. 16.5% of 270 =
  17. 17.10% of 130 =
  18. 18.50% of 530 =
  19. 19.50% of 180 =
  20. 20.15% of 70 =
  21. 21.25% of 310 =
  22. 22.5% of 850 =
  23. 23.10% of 420 =
  24. 24.50% of 260 =
  25. 25.15% of 830 =
  26. 26.5% of 480 =
  27. 27.20% of 110 =
  28. 28.25% of 600 =
  29. 29.20% of 220 =
  30. 30.15% of 630 =
  31. 31.10% of 70 =
  32. 32.50% of 680 =
  33. 33.5% of 360 =
  34. 34.50% of 460 =
  35. 35.15% of 360 =
  36. 36.5% of 660 =
  37. 37.1% of 170 =
  38. 38.15% of 820 =
  39. 39.10% of 360 =
  40. 40.1% of 70 =

Answer key

  1. 37.5
  2. 222.5
  3. 156
  4. 69
  5. 75
  6. 7.5
  7. 90
  8. 370
  9. 0.2
  10. 235
  11. 115.5
  12. 2
  13. 34
  14. 82
  15. 85
  16. 13.5
  17. 13
  18. 265
  19. 90
  20. 10.5
  21. 77.5
  22. 42.5
  23. 42
  24. 130
  25. 124.5
  26. 24
  27. 22
  28. 150
  29. 44
  30. 94.5
  31. 7
  32. 340
  33. 18
  34. 230
  35. 54
  36. 33
  37. 1.7
  38. 123
  39. 36
  40. 0.7

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