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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 452 · 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. 1.50% of 400 =
  2. 2.10% of 690 =
  3. 3.50% of 590 =
  4. 4.10% of 360 =
  5. 5.15% of 420 =
  6. 6.20% of 530 =
  7. 7.5% of 620 =
  8. 8.20% of 460 =
  9. 9.5% of 850 =
  10. 10.25% of 190 =
  11. 11.25% of 830 =
  12. 12.5% of 700 =
  13. 13.15% of 90 =
  14. 14.25% of 560 =
  15. 15.5% of 240 =
  16. 16.50% of 640 =
  17. 17.20% of 20 =
  18. 18.10% of 450 =
  19. 19.10% of 20 =
  20. 20.15% of 160 =
  21. 21.10% of 290 =
  22. 22.5% of 820 =
  23. 23.5% of 750 =
  24. 24.50% of 270 =
  25. 25.10% of 850 =
  26. 26.1% of 220 =
  27. 27.50% of 430 =
  28. 28.20% of 360 =
  29. 29.50% of 640 =
  30. 30.1% of 330 =
  31. 31.10% of 640 =
  32. 32.1% of 860 =
  33. 33.25% of 630 =
  34. 34.1% of 120 =
  35. 35.10% of 480 =
  36. 36.10% of 760 =
  37. 37.5% of 310 =
  38. 38.5% of 150 =
  39. 39.20% of 20 =
  40. 40.5% of 700 =

Answer key

  1. 200
  2. 69
  3. 295
  4. 36
  5. 63
  6. 106
  7. 31
  8. 92
  9. 42.5
  10. 47.5
  11. 207.5
  12. 35
  13. 13.5
  14. 140
  15. 12
  16. 320
  17. 4
  18. 45
  19. 2
  20. 24
  21. 29
  22. 41
  23. 37.5
  24. 135
  25. 85
  26. 2.2
  27. 215
  28. 72
  29. 320
  30. 3.3
  31. 64
  32. 8.6
  33. 157.5
  34. 1.2
  35. 48
  36. 76
  37. 15.5
  38. 7.5
  39. 4
  40. 35

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