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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 448 · 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 730 =
  2. 2.15% of 130 =
  3. 3.50% of 220 =
  4. 4.20% of 810 =
  5. 5.15% of 30 =
  6. 6.20% of 690 =
  7. 7.10% of 60 =
  8. 8.15% of 430 =
  9. 9.1% of 100 =
  10. 10.25% of 830 =
  11. 11.5% of 20 =
  12. 12.10% of 770 =
  13. 13.50% of 390 =
  14. 14.20% of 890 =
  15. 15.1% of 190 =
  16. 16.20% of 700 =
  17. 17.25% of 160 =
  18. 18.10% of 540 =
  19. 19.5% of 430 =
  20. 20.25% of 570 =
  21. 21.10% of 210 =
  22. 22.50% of 900 =
  23. 23.10% of 270 =
  24. 24.10% of 640 =
  25. 25.10% of 180 =
  26. 26.20% of 380 =
  27. 27.5% of 290 =
  28. 28.50% of 580 =
  29. 29.25% of 150 =
  30. 30.15% of 210 =
  31. 31.10% of 140 =
  32. 32.25% of 70 =
  33. 33.1% of 590 =
  34. 34.5% of 760 =
  35. 35.20% of 50 =
  36. 36.10% of 810 =
  37. 37.1% of 130 =
  38. 38.1% of 80 =
  39. 39.25% of 310 =
  40. 40.15% of 260 =

Answer key

  1. 365
  2. 19.5
  3. 110
  4. 162
  5. 4.5
  6. 138
  7. 6
  8. 64.5
  9. 1
  10. 207.5
  11. 1
  12. 77
  13. 195
  14. 178
  15. 1.9
  16. 140
  17. 40
  18. 54
  19. 21.5
  20. 142.5
  21. 21
  22. 450
  23. 27
  24. 64
  25. 18
  26. 76
  27. 14.5
  28. 290
  29. 37.5
  30. 31.5
  31. 14
  32. 17.5
  33. 5.9
  34. 38
  35. 10
  36. 81
  37. 1.3
  38. 0.8
  39. 77.5
  40. 39

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