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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 422 · 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. 1.5% of 190 =
  2. 2.50% of 600 =
  3. 3.10% of 430 =
  4. 4.50% of 610 =
  5. 5.20% of 430 =
  6. 6.5% of 250 =
  7. 7.10% of 520 =
  8. 8.20% of 50 =
  9. 9.5% of 90 =
  10. 10.5% of 30 =
  11. 11.10% of 90 =
  12. 12.10% of 560 =
  13. 13.5% of 270 =
  14. 14.50% of 230 =
  15. 15.15% of 200 =
  16. 16.25% of 370 =
  17. 17.15% of 560 =
  18. 18.1% of 280 =
  19. 19.5% of 730 =
  20. 20.1% of 230 =
  21. 21.50% of 780 =
  22. 22.10% of 40 =
  23. 23.5% of 610 =
  24. 24.5% of 860 =
  25. 25.50% of 350 =
  26. 26.10% of 670 =
  27. 27.20% of 850 =
  28. 28.15% of 350 =
  29. 29.20% of 900 =
  30. 30.20% of 20 =
  31. 31.5% of 60 =
  32. 32.20% of 220 =
  33. 33.10% of 140 =
  34. 34.50% of 330 =
  35. 35.15% of 540 =
  36. 36.50% of 600 =
  37. 37.50% of 490 =
  38. 38.10% of 130 =
  39. 39.10% of 110 =
  40. 40.25% of 270 =

Answer key

  1. 9.5
  2. 300
  3. 43
  4. 305
  5. 86
  6. 12.5
  7. 52
  8. 10
  9. 4.5
  10. 1.5
  11. 9
  12. 56
  13. 13.5
  14. 115
  15. 30
  16. 92.5
  17. 84
  18. 2.8
  19. 36.5
  20. 2.3
  21. 390
  22. 4
  23. 30.5
  24. 43
  25. 175
  26. 67
  27. 170
  28. 52.5
  29. 180
  30. 4
  31. 3
  32. 44
  33. 14
  34. 165
  35. 81
  36. 300
  37. 245
  38. 13
  39. 11
  40. 67.5

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