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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 42 · 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. 1.10% of 460 =
  2. 2.20% of 330 =
  3. 3.10% of 880 =
  4. 4.20% of 830 =
  5. 5.25% of 250 =
  6. 6.1% of 260 =
  7. 7.1% of 340 =
  8. 8.1% of 630 =
  9. 9.50% of 720 =
  10. 10.20% of 200 =
  11. 11.1% of 380 =
  12. 12.5% of 500 =
  13. 13.15% of 700 =
  14. 14.15% of 780 =
  15. 15.5% of 130 =
  16. 16.10% of 70 =
  17. 17.10% of 150 =
  18. 18.15% of 340 =
  19. 19.50% of 230 =
  20. 20.10% of 50 =
  21. 21.20% of 580 =
  22. 22.20% of 460 =
  23. 23.15% of 590 =
  24. 24.1% of 60 =
  25. 25.50% of 50 =
  26. 26.5% of 30 =
  27. 27.50% of 30 =
  28. 28.15% of 820 =
  29. 29.5% of 210 =
  30. 30.20% of 690 =
  31. 31.5% of 530 =
  32. 32.20% of 690 =
  33. 33.50% of 890 =
  34. 34.20% of 470 =
  35. 35.1% of 230 =
  36. 36.20% of 140 =
  37. 37.15% of 610 =
  38. 38.15% of 830 =
  39. 39.25% of 660 =
  40. 40.5% of 360 =

Answer key

  1. 46
  2. 66
  3. 88
  4. 166
  5. 62.5
  6. 2.6
  7. 3.4
  8. 6.3
  9. 360
  10. 40
  11. 3.8
  12. 25
  13. 105
  14. 117
  15. 6.5
  16. 7
  17. 15
  18. 51
  19. 115
  20. 5
  21. 116
  22. 92
  23. 88.5
  24. 0.6
  25. 25
  26. 1.5
  27. 15
  28. 123
  29. 10.5
  30. 138
  31. 26.5
  32. 138
  33. 445
  34. 94
  35. 2.3
  36. 28
  37. 91.5
  38. 124.5
  39. 165
  40. 18

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