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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 281 · 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 160 =
  2. 2.5% of 570 =
  3. 3.1% of 630 =
  4. 4.5% of 600 =
  5. 5.5% of 850 =
  6. 6.15% of 430 =
  7. 7.50% of 660 =
  8. 8.10% of 830 =
  9. 9.10% of 70 =
  10. 10.1% of 310 =
  11. 11.25% of 170 =
  12. 12.15% of 590 =
  13. 13.50% of 700 =
  14. 14.1% of 890 =
  15. 15.10% of 690 =
  16. 16.1% of 220 =
  17. 17.25% of 550 =
  18. 18.10% of 320 =
  19. 19.50% of 730 =
  20. 20.5% of 210 =
  21. 21.50% of 280 =
  22. 22.20% of 560 =
  23. 23.20% of 660 =
  24. 24.50% of 430 =
  25. 25.20% of 490 =
  26. 26.50% of 900 =
  27. 27.10% of 170 =
  28. 28.20% of 700 =
  29. 29.25% of 350 =
  30. 30.1% of 570 =
  31. 31.5% of 760 =
  32. 32.10% of 830 =
  33. 33.5% of 60 =
  34. 34.10% of 380 =
  35. 35.50% of 310 =
  36. 36.15% of 360 =
  37. 37.20% of 650 =
  38. 38.10% of 140 =
  39. 39.1% of 670 =
  40. 40.1% of 370 =

Answer key

  1. 80
  2. 28.5
  3. 6.3
  4. 30
  5. 42.5
  6. 64.5
  7. 330
  8. 83
  9. 7
  10. 3.1
  11. 42.5
  12. 88.5
  13. 350
  14. 8.9
  15. 69
  16. 2.2
  17. 137.5
  18. 32
  19. 365
  20. 10.5
  21. 140
  22. 112
  23. 132
  24. 215
  25. 98
  26. 450
  27. 17
  28. 140
  29. 87.5
  30. 5.7
  31. 38
  32. 83
  33. 3
  34. 38
  35. 155
  36. 54
  37. 130
  38. 14
  39. 6.7
  40. 3.7

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