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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 133 · 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. 1.25% of 780 =
  2. 2.25% of 530 =
  3. 3.10% of 480 =
  4. 4.50% of 670 =
  5. 5.5% of 190 =
  6. 6.25% of 730 =
  7. 7.15% of 230 =
  8. 8.5% of 610 =
  9. 9.50% of 780 =
  10. 10.10% of 790 =
  11. 11.20% of 540 =
  12. 12.15% of 720 =
  13. 13.10% of 600 =
  14. 14.5% of 290 =
  15. 15.1% of 190 =
  16. 16.10% of 280 =
  17. 17.1% of 330 =
  18. 18.5% of 20 =
  19. 19.5% of 80 =
  20. 20.25% of 270 =
  21. 21.25% of 710 =
  22. 22.20% of 600 =
  23. 23.15% of 550 =
  24. 24.15% of 120 =
  25. 25.50% of 580 =
  26. 26.10% of 240 =
  27. 27.15% of 200 =
  28. 28.25% of 650 =
  29. 29.10% of 290 =
  30. 30.1% of 880 =
  31. 31.10% of 220 =
  32. 32.5% of 280 =
  33. 33.50% of 180 =
  34. 34.20% of 130 =
  35. 35.25% of 210 =
  36. 36.20% of 850 =
  37. 37.50% of 610 =
  38. 38.10% of 570 =
  39. 39.15% of 470 =
  40. 40.1% of 690 =

Answer key

  1. 195
  2. 132.5
  3. 48
  4. 335
  5. 9.5
  6. 182.5
  7. 34.5
  8. 30.5
  9. 390
  10. 79
  11. 108
  12. 108
  13. 60
  14. 14.5
  15. 1.9
  16. 28
  17. 3.3
  18. 1
  19. 4
  20. 67.5
  21. 177.5
  22. 120
  23. 82.5
  24. 18
  25. 290
  26. 24
  27. 30
  28. 162.5
  29. 29
  30. 8.8
  31. 22
  32. 14
  33. 90
  34. 26
  35. 52.5
  36. 170
  37. 305
  38. 57
  39. 70.5
  40. 6.9

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