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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 604 · 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. 1.50% of 760 =
  2. 2.20% of 870 =
  3. 3.50% of 330 =
  4. 4.1% of 280 =
  5. 5.50% of 730 =
  6. 6.15% of 150 =
  7. 7.50% of 190 =
  8. 8.1% of 330 =
  9. 9.10% of 450 =
  10. 10.5% of 640 =
  11. 11.20% of 680 =
  12. 12.1% of 220 =
  13. 13.15% of 880 =
  14. 14.15% of 650 =
  15. 15.10% of 180 =
  16. 16.10% of 830 =
  17. 17.5% of 870 =
  18. 18.10% of 670 =
  19. 19.20% of 470 =
  20. 20.15% of 660 =
  21. 21.10% of 660 =
  22. 22.20% of 660 =
  23. 23.25% of 560 =
  24. 24.25% of 770 =
  25. 25.10% of 830 =
  26. 26.10% of 70 =
  27. 27.25% of 520 =
  28. 28.5% of 140 =
  29. 29.1% of 130 =
  30. 30.1% of 380 =
  31. 31.10% of 130 =
  32. 32.5% of 900 =
  33. 33.20% of 560 =
  34. 34.1% of 580 =
  35. 35.25% of 480 =
  36. 36.50% of 360 =
  37. 37.50% of 250 =
  38. 38.5% of 680 =
  39. 39.50% of 340 =
  40. 40.50% of 230 =

Answer key

  1. 380
  2. 174
  3. 165
  4. 2.8
  5. 365
  6. 22.5
  7. 95
  8. 3.3
  9. 45
  10. 32
  11. 136
  12. 2.2
  13. 132
  14. 97.5
  15. 18
  16. 83
  17. 43.5
  18. 67
  19. 94
  20. 99
  21. 66
  22. 132
  23. 140
  24. 192.5
  25. 83
  26. 7
  27. 130
  28. 7
  29. 1.3
  30. 3.8
  31. 13
  32. 45
  33. 112
  34. 5.8
  35. 120
  36. 180
  37. 125
  38. 34
  39. 170
  40. 115

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