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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 323 · 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 190 =
  2. 2.10% of 30 =
  3. 3.10% of 180 =
  4. 4.25% of 770 =
  5. 5.1% of 130 =
  6. 6.5% of 770 =
  7. 7.25% of 160 =
  8. 8.20% of 150 =
  9. 9.20% of 220 =
  10. 10.20% of 510 =
  11. 11.20% of 810 =
  12. 12.25% of 510 =
  13. 13.15% of 20 =
  14. 14.20% of 770 =
  15. 15.15% of 550 =
  16. 16.5% of 830 =
  17. 17.1% of 280 =
  18. 18.15% of 840 =
  19. 19.20% of 860 =
  20. 20.10% of 410 =
  21. 21.1% of 700 =
  22. 22.50% of 540 =
  23. 23.5% of 900 =
  24. 24.1% of 770 =
  25. 25.10% of 750 =
  26. 26.25% of 740 =
  27. 27.15% of 330 =
  28. 28.20% of 170 =
  29. 29.50% of 110 =
  30. 30.5% of 820 =
  31. 31.10% of 310 =
  32. 32.25% of 150 =
  33. 33.20% of 360 =
  34. 34.1% of 560 =
  35. 35.15% of 170 =
  36. 36.25% of 220 =
  37. 37.1% of 340 =
  38. 38.1% of 70 =
  39. 39.1% of 410 =
  40. 40.10% of 730 =

Answer key

  1. 1.9
  2. 3
  3. 18
  4. 192.5
  5. 1.3
  6. 38.5
  7. 40
  8. 30
  9. 44
  10. 102
  11. 162
  12. 127.5
  13. 3
  14. 154
  15. 82.5
  16. 41.5
  17. 2.8
  18. 126
  19. 172
  20. 41
  21. 7
  22. 270
  23. 45
  24. 7.7
  25. 75
  26. 185
  27. 49.5
  28. 34
  29. 55
  30. 41
  31. 31
  32. 37.5
  33. 72
  34. 5.6
  35. 25.5
  36. 55
  37. 3.4
  38. 0.7
  39. 4.1
  40. 73

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