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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 272 · 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. 1.5% of 310 =
  2. 2.20% of 150 =
  3. 3.1% of 100 =
  4. 4.50% of 590 =
  5. 5.5% of 200 =
  6. 6.15% of 480 =
  7. 7.15% of 120 =
  8. 8.20% of 260 =
  9. 9.1% of 260 =
  10. 10.50% of 480 =
  11. 11.1% of 690 =
  12. 12.5% of 250 =
  13. 13.20% of 470 =
  14. 14.10% of 210 =
  15. 15.10% of 770 =
  16. 16.50% of 170 =
  17. 17.10% of 560 =
  18. 18.5% of 40 =
  19. 19.25% of 110 =
  20. 20.5% of 780 =
  21. 21.20% of 90 =
  22. 22.10% of 20 =
  23. 23.5% of 570 =
  24. 24.20% of 220 =
  25. 25.1% of 780 =
  26. 26.15% of 200 =
  27. 27.1% of 710 =
  28. 28.1% of 880 =
  29. 29.10% of 60 =
  30. 30.15% of 750 =
  31. 31.50% of 170 =
  32. 32.10% of 370 =
  33. 33.20% of 300 =
  34. 34.1% of 690 =
  35. 35.20% of 810 =
  36. 36.25% of 140 =
  37. 37.15% of 300 =
  38. 38.20% of 590 =
  39. 39.25% of 880 =
  40. 40.25% of 440 =

Answer key

  1. 15.5
  2. 30
  3. 1
  4. 295
  5. 10
  6. 72
  7. 18
  8. 52
  9. 2.6
  10. 240
  11. 6.9
  12. 12.5
  13. 94
  14. 21
  15. 77
  16. 85
  17. 56
  18. 2
  19. 27.5
  20. 39
  21. 18
  22. 2
  23. 28.5
  24. 44
  25. 7.8
  26. 30
  27. 7.1
  28. 8.8
  29. 6
  30. 112.5
  31. 85
  32. 37
  33. 60
  34. 6.9
  35. 162
  36. 35
  37. 45
  38. 118
  39. 220
  40. 110

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