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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 246 · 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 560 =
  2. 2.1% of 850 =
  3. 3.15% of 650 =
  4. 4.1% of 240 =
  5. 5.10% of 580 =
  6. 6.10% of 720 =
  7. 7.1% of 210 =
  8. 8.50% of 620 =
  9. 9.50% of 420 =
  10. 10.50% of 540 =
  11. 11.20% of 50 =
  12. 12.1% of 610 =
  13. 13.15% of 700 =
  14. 14.15% of 410 =
  15. 15.1% of 730 =
  16. 16.50% of 280 =
  17. 17.1% of 730 =
  18. 18.10% of 170 =
  19. 19.15% of 160 =
  20. 20.20% of 690 =
  21. 21.5% of 580 =
  22. 22.1% of 850 =
  23. 23.1% of 210 =
  24. 24.15% of 760 =
  25. 25.50% of 780 =
  26. 26.10% of 570 =
  27. 27.20% of 200 =
  28. 28.1% of 350 =
  29. 29.25% of 420 =
  30. 30.15% of 80 =
  31. 31.50% of 640 =
  32. 32.1% of 240 =
  33. 33.15% of 840 =
  34. 34.25% of 20 =
  35. 35.10% of 600 =
  36. 36.1% of 740 =
  37. 37.10% of 70 =
  38. 38.5% of 260 =
  39. 39.50% of 540 =
  40. 40.50% of 400 =

Answer key

  1. 84
  2. 8.5
  3. 97.5
  4. 2.4
  5. 58
  6. 72
  7. 2.1
  8. 310
  9. 210
  10. 270
  11. 10
  12. 6.1
  13. 105
  14. 61.5
  15. 7.3
  16. 140
  17. 7.3
  18. 17
  19. 24
  20. 138
  21. 29
  22. 8.5
  23. 2.1
  24. 114
  25. 390
  26. 57
  27. 40
  28. 3.5
  29. 105
  30. 12
  31. 320
  32. 2.4
  33. 126
  34. 5
  35. 60
  36. 7.4
  37. 7
  38. 13
  39. 270
  40. 200

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