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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 207 · 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 450 =
  2. 2.50% of 30 =
  3. 3.25% of 220 =
  4. 4.20% of 870 =
  5. 5.5% of 160 =
  6. 6.25% of 870 =
  7. 7.5% of 30 =
  8. 8.10% of 240 =
  9. 9.10% of 300 =
  10. 10.10% of 700 =
  11. 11.10% of 670 =
  12. 12.25% of 400 =
  13. 13.50% of 50 =
  14. 14.1% of 580 =
  15. 15.15% of 490 =
  16. 16.15% of 440 =
  17. 17.5% of 550 =
  18. 18.5% of 260 =
  19. 19.5% of 800 =
  20. 20.20% of 470 =
  21. 21.50% of 60 =
  22. 22.20% of 540 =
  23. 23.15% of 550 =
  24. 24.20% of 830 =
  25. 25.5% of 390 =
  26. 26.10% of 610 =
  27. 27.20% of 610 =
  28. 28.10% of 310 =
  29. 29.10% of 60 =
  30. 30.5% of 640 =
  31. 31.5% of 50 =
  32. 32.5% of 300 =
  33. 33.50% of 860 =
  34. 34.20% of 680 =
  35. 35.20% of 550 =
  36. 36.50% of 620 =
  37. 37.5% of 700 =
  38. 38.50% of 240 =
  39. 39.15% of 640 =
  40. 40.1% of 20 =

Answer key

  1. 4.5
  2. 15
  3. 55
  4. 174
  5. 8
  6. 217.5
  7. 1.5
  8. 24
  9. 30
  10. 70
  11. 67
  12. 100
  13. 25
  14. 5.8
  15. 73.5
  16. 66
  17. 27.5
  18. 13
  19. 40
  20. 94
  21. 30
  22. 108
  23. 82.5
  24. 166
  25. 19.5
  26. 61
  27. 122
  28. 31
  29. 6
  30. 32
  31. 2.5
  32. 15
  33. 430
  34. 136
  35. 110
  36. 310
  37. 35
  38. 120
  39. 96
  40. 0.2

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