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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 801 · 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 680 =
  2. 2.1% of 740 =
  3. 3.15% of 710 =
  4. 4.1% of 690 =
  5. 5.20% of 390 =
  6. 6.5% of 300 =
  7. 7.1% of 600 =
  8. 8.10% of 330 =
  9. 9.20% of 770 =
  10. 10.5% of 870 =
  11. 11.5% of 520 =
  12. 12.10% of 220 =
  13. 13.5% of 900 =
  14. 14.5% of 340 =
  15. 15.5% of 830 =
  16. 16.25% of 730 =
  17. 17.20% of 760 =
  18. 18.10% of 140 =
  19. 19.10% of 460 =
  20. 20.50% of 160 =
  21. 21.5% of 680 =
  22. 22.25% of 230 =
  23. 23.1% of 750 =
  24. 24.1% of 200 =
  25. 25.1% of 100 =
  26. 26.50% of 190 =
  27. 27.10% of 200 =
  28. 28.25% of 130 =
  29. 29.20% of 410 =
  30. 30.1% of 60 =
  31. 31.10% of 640 =
  32. 32.1% of 110 =
  33. 33.1% of 240 =
  34. 34.25% of 290 =
  35. 35.15% of 430 =
  36. 36.5% of 740 =
  37. 37.1% of 200 =
  38. 38.5% of 640 =
  39. 39.20% of 380 =
  40. 40.10% of 870 =

Answer key

  1. 170
  2. 7.4
  3. 106.5
  4. 6.9
  5. 78
  6. 15
  7. 6
  8. 33
  9. 154
  10. 43.5
  11. 26
  12. 22
  13. 45
  14. 17
  15. 41.5
  16. 182.5
  17. 152
  18. 14
  19. 46
  20. 80
  21. 34
  22. 57.5
  23. 7.5
  24. 2
  25. 1
  26. 95
  27. 20
  28. 32.5
  29. 82
  30. 0.6
  31. 64
  32. 1.1
  33. 2.4
  34. 72.5
  35. 64.5
  36. 37
  37. 2
  38. 32
  39. 76
  40. 87

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