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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 225 · 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. 1.20% of 890 =
  2. 2.25% of 810 =
  3. 3.1% of 890 =
  4. 4.1% of 510 =
  5. 5.25% of 750 =
  6. 6.15% of 640 =
  7. 7.25% of 770 =
  8. 8.5% of 660 =
  9. 9.1% of 230 =
  10. 10.1% of 90 =
  11. 11.50% of 350 =
  12. 12.20% of 260 =
  13. 13.5% of 100 =
  14. 14.15% of 730 =
  15. 15.5% of 740 =
  16. 16.10% of 240 =
  17. 17.10% of 220 =
  18. 18.50% of 30 =
  19. 19.1% of 40 =
  20. 20.20% of 230 =
  21. 21.15% of 130 =
  22. 22.20% of 750 =
  23. 23.5% of 700 =
  24. 24.10% of 810 =
  25. 25.10% of 850 =
  26. 26.5% of 110 =
  27. 27.20% of 90 =
  28. 28.5% of 570 =
  29. 29.50% of 860 =
  30. 30.1% of 710 =
  31. 31.25% of 780 =
  32. 32.20% of 320 =
  33. 33.10% of 370 =
  34. 34.1% of 500 =
  35. 35.5% of 310 =
  36. 36.10% of 430 =
  37. 37.1% of 230 =
  38. 38.25% of 830 =
  39. 39.1% of 300 =
  40. 40.5% of 480 =

Answer key

  1. 178
  2. 202.5
  3. 8.9
  4. 5.1
  5. 187.5
  6. 96
  7. 192.5
  8. 33
  9. 2.3
  10. 0.9
  11. 175
  12. 52
  13. 5
  14. 109.5
  15. 37
  16. 24
  17. 22
  18. 15
  19. 0.4
  20. 46
  21. 19.5
  22. 150
  23. 35
  24. 81
  25. 85
  26. 5.5
  27. 18
  28. 28.5
  29. 430
  30. 7.1
  31. 195
  32. 64
  33. 37
  34. 5
  35. 15.5
  36. 43
  37. 2.3
  38. 207.5
  39. 3
  40. 24

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