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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 157 · 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. 1.1% of 120 =
  2. 2.10% of 240 =
  3. 3.5% of 750 =
  4. 4.20% of 360 =
  5. 5.10% of 830 =
  6. 6.10% of 760 =
  7. 7.1% of 890 =
  8. 8.50% of 250 =
  9. 9.5% of 680 =
  10. 10.10% of 70 =
  11. 11.20% of 810 =
  12. 12.25% of 370 =
  13. 13.15% of 420 =
  14. 14.50% of 520 =
  15. 15.25% of 330 =
  16. 16.1% of 200 =
  17. 17.1% of 750 =
  18. 18.5% of 380 =
  19. 19.5% of 440 =
  20. 20.25% of 830 =
  21. 21.1% of 100 =
  22. 22.5% of 50 =
  23. 23.1% of 200 =
  24. 24.15% of 280 =
  25. 25.1% of 60 =
  26. 26.5% of 130 =
  27. 27.15% of 900 =
  28. 28.1% of 50 =
  29. 29.15% of 680 =
  30. 30.10% of 770 =
  31. 31.5% of 320 =
  32. 32.20% of 650 =
  33. 33.10% of 790 =
  34. 34.5% of 240 =
  35. 35.5% of 150 =
  36. 36.20% of 160 =
  37. 37.5% of 730 =
  38. 38.50% of 770 =
  39. 39.10% of 690 =
  40. 40.25% of 260 =

Answer key

  1. 1.2
  2. 24
  3. 37.5
  4. 72
  5. 83
  6. 76
  7. 8.9
  8. 125
  9. 34
  10. 7
  11. 162
  12. 92.5
  13. 63
  14. 260
  15. 82.5
  16. 2
  17. 7.5
  18. 19
  19. 22
  20. 207.5
  21. 1
  22. 2.5
  23. 2
  24. 42
  25. 0.6
  26. 6.5
  27. 135
  28. 0.5
  29. 102
  30. 77
  31. 16
  32. 130
  33. 79
  34. 12
  35. 7.5
  36. 32
  37. 36.5
  38. 385
  39. 69
  40. 65

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