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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 589 · 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 300 =
  2. 2.25% of 880 =
  3. 3.20% of 760 =
  4. 4.50% of 50 =
  5. 5.20% of 400 =
  6. 6.50% of 680 =
  7. 7.15% of 130 =
  8. 8.25% of 570 =
  9. 9.1% of 270 =
  10. 10.10% of 720 =
  11. 11.1% of 800 =
  12. 12.25% of 430 =
  13. 13.50% of 470 =
  14. 14.5% of 20 =
  15. 15.15% of 880 =
  16. 16.5% of 580 =
  17. 17.15% of 170 =
  18. 18.25% of 740 =
  19. 19.25% of 660 =
  20. 20.20% of 340 =
  21. 21.25% of 360 =
  22. 22.50% of 70 =
  23. 23.10% of 400 =
  24. 24.20% of 290 =
  25. 25.25% of 20 =
  26. 26.50% of 730 =
  27. 27.1% of 690 =
  28. 28.10% of 770 =
  29. 29.50% of 720 =
  30. 30.20% of 750 =
  31. 31.50% of 710 =
  32. 32.25% of 490 =
  33. 33.1% of 210 =
  34. 34.5% of 750 =
  35. 35.20% of 330 =
  36. 36.25% of 690 =
  37. 37.1% of 870 =
  38. 38.20% of 710 =
  39. 39.15% of 760 =
  40. 40.10% of 120 =

Answer key

  1. 150
  2. 220
  3. 152
  4. 25
  5. 80
  6. 340
  7. 19.5
  8. 142.5
  9. 2.7
  10. 72
  11. 8
  12. 107.5
  13. 235
  14. 1
  15. 132
  16. 29
  17. 25.5
  18. 185
  19. 165
  20. 68
  21. 90
  22. 35
  23. 40
  24. 58
  25. 5
  26. 365
  27. 6.9
  28. 77
  29. 360
  30. 150
  31. 355
  32. 122.5
  33. 2.1
  34. 37.5
  35. 66
  36. 172.5
  37. 8.7
  38. 142
  39. 114
  40. 12

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