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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 243 · 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 150 =
  2. 2.20% of 900 =
  3. 3.1% of 90 =
  4. 4.5% of 60 =
  5. 5.15% of 500 =
  6. 6.1% of 230 =
  7. 7.20% of 120 =
  8. 8.5% of 560 =
  9. 9.25% of 290 =
  10. 10.50% of 330 =
  11. 11.20% of 530 =
  12. 12.1% of 290 =
  13. 13.25% of 570 =
  14. 14.10% of 810 =
  15. 15.1% of 820 =
  16. 16.20% of 620 =
  17. 17.15% of 20 =
  18. 18.20% of 410 =
  19. 19.25% of 750 =
  20. 20.25% of 130 =
  21. 21.20% of 430 =
  22. 22.10% of 570 =
  23. 23.10% of 570 =
  24. 24.5% of 700 =
  25. 25.50% of 270 =
  26. 26.10% of 240 =
  27. 27.5% of 590 =
  28. 28.20% of 890 =
  29. 29.1% of 460 =
  30. 30.1% of 390 =
  31. 31.20% of 860 =
  32. 32.10% of 90 =
  33. 33.5% of 220 =
  34. 34.20% of 30 =
  35. 35.15% of 20 =
  36. 36.5% of 270 =
  37. 37.5% of 810 =
  38. 38.1% of 190 =
  39. 39.20% of 20 =
  40. 40.5% of 460 =

Answer key

  1. 1.5
  2. 180
  3. 0.9
  4. 3
  5. 75
  6. 2.3
  7. 24
  8. 28
  9. 72.5
  10. 165
  11. 106
  12. 2.9
  13. 142.5
  14. 81
  15. 8.2
  16. 124
  17. 3
  18. 82
  19. 187.5
  20. 32.5
  21. 86
  22. 57
  23. 57
  24. 35
  25. 135
  26. 24
  27. 29.5
  28. 178
  29. 4.6
  30. 3.9
  31. 172
  32. 9
  33. 11
  34. 6
  35. 3
  36. 13.5
  37. 40.5
  38. 1.9
  39. 4
  40. 23

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