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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 347 · 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. 1.15% of 300 =
  2. 2.1% of 170 =
  3. 3.15% of 740 =
  4. 4.20% of 680 =
  5. 5.5% of 50 =
  6. 6.5% of 810 =
  7. 7.20% of 600 =
  8. 8.20% of 360 =
  9. 9.25% of 160 =
  10. 10.20% of 190 =
  11. 11.1% of 460 =
  12. 12.20% of 380 =
  13. 13.20% of 200 =
  14. 14.50% of 530 =
  15. 15.25% of 330 =
  16. 16.20% of 580 =
  17. 17.20% of 50 =
  18. 18.15% of 270 =
  19. 19.1% of 170 =
  20. 20.10% of 330 =
  21. 21.20% of 140 =
  22. 22.10% of 710 =
  23. 23.10% of 400 =
  24. 24.50% of 800 =
  25. 25.5% of 300 =
  26. 26.1% of 680 =
  27. 27.25% of 590 =
  28. 28.10% of 570 =
  29. 29.25% of 540 =
  30. 30.50% of 800 =
  31. 31.15% of 510 =
  32. 32.1% of 80 =
  33. 33.5% of 520 =
  34. 34.1% of 150 =
  35. 35.15% of 200 =
  36. 36.1% of 830 =
  37. 37.50% of 400 =
  38. 38.5% of 410 =
  39. 39.1% of 470 =
  40. 40.20% of 360 =

Answer key

  1. 45
  2. 1.7
  3. 111
  4. 136
  5. 2.5
  6. 40.5
  7. 120
  8. 72
  9. 40
  10. 38
  11. 4.6
  12. 76
  13. 40
  14. 265
  15. 82.5
  16. 116
  17. 10
  18. 40.5
  19. 1.7
  20. 33
  21. 28
  22. 71
  23. 40
  24. 400
  25. 15
  26. 6.8
  27. 147.5
  28. 57
  29. 135
  30. 400
  31. 76.5
  32. 0.8
  33. 26
  34. 1.5
  35. 30
  36. 8.3
  37. 200
  38. 20.5
  39. 4.7
  40. 72

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