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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 329 · 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 240 =
  2. 2.5% of 660 =
  3. 3.25% of 70 =
  4. 4.15% of 810 =
  5. 5.5% of 400 =
  6. 6.50% of 400 =
  7. 7.25% of 270 =
  8. 8.25% of 830 =
  9. 9.5% of 640 =
  10. 10.10% of 380 =
  11. 11.25% of 550 =
  12. 12.50% of 580 =
  13. 13.15% of 630 =
  14. 14.50% of 420 =
  15. 15.5% of 520 =
  16. 16.25% of 740 =
  17. 17.25% of 470 =
  18. 18.15% of 610 =
  19. 19.50% of 110 =
  20. 20.15% of 30 =
  21. 21.1% of 760 =
  22. 22.15% of 760 =
  23. 23.50% of 370 =
  24. 24.10% of 20 =
  25. 25.50% of 150 =
  26. 26.5% of 520 =
  27. 27.15% of 530 =
  28. 28.50% of 110 =
  29. 29.25% of 870 =
  30. 30.5% of 700 =
  31. 31.50% of 260 =
  32. 32.1% of 260 =
  33. 33.10% of 180 =
  34. 34.10% of 470 =
  35. 35.5% of 470 =
  36. 36.20% of 900 =
  37. 37.50% of 370 =
  38. 38.10% of 610 =
  39. 39.15% of 150 =
  40. 40.15% of 700 =

Answer key

  1. 48
  2. 33
  3. 17.5
  4. 121.5
  5. 20
  6. 200
  7. 67.5
  8. 207.5
  9. 32
  10. 38
  11. 137.5
  12. 290
  13. 94.5
  14. 210
  15. 26
  16. 185
  17. 117.5
  18. 91.5
  19. 55
  20. 4.5
  21. 7.6
  22. 114
  23. 185
  24. 2
  25. 75
  26. 26
  27. 79.5
  28. 55
  29. 217.5
  30. 35
  31. 130
  32. 2.6
  33. 18
  34. 47
  35. 23.5
  36. 180
  37. 185
  38. 61
  39. 22.5
  40. 105

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