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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 278 · 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. 1.20% of 540 =
  2. 2.50% of 570 =
  3. 3.20% of 810 =
  4. 4.25% of 600 =
  5. 5.10% of 690 =
  6. 6.15% of 810 =
  7. 7.50% of 240 =
  8. 8.10% of 890 =
  9. 9.10% of 90 =
  10. 10.10% of 830 =
  11. 11.10% of 410 =
  12. 12.10% of 730 =
  13. 13.15% of 570 =
  14. 14.25% of 860 =
  15. 15.10% of 390 =
  16. 16.15% of 740 =
  17. 17.50% of 490 =
  18. 18.5% of 60 =
  19. 19.25% of 540 =
  20. 20.1% of 260 =
  21. 21.1% of 750 =
  22. 22.25% of 510 =
  23. 23.10% of 720 =
  24. 24.50% of 740 =
  25. 25.1% of 600 =
  26. 26.1% of 620 =
  27. 27.1% of 190 =
  28. 28.50% of 330 =
  29. 29.1% of 650 =
  30. 30.50% of 270 =
  31. 31.15% of 770 =
  32. 32.15% of 70 =
  33. 33.10% of 190 =
  34. 34.10% of 340 =
  35. 35.10% of 730 =
  36. 36.1% of 250 =
  37. 37.5% of 600 =
  38. 38.5% of 110 =
  39. 39.1% of 590 =
  40. 40.1% of 260 =

Answer key

  1. 108
  2. 285
  3. 162
  4. 150
  5. 69
  6. 121.5
  7. 120
  8. 89
  9. 9
  10. 83
  11. 41
  12. 73
  13. 85.5
  14. 215
  15. 39
  16. 111
  17. 245
  18. 3
  19. 135
  20. 2.6
  21. 7.5
  22. 127.5
  23. 72
  24. 370
  25. 6
  26. 6.2
  27. 1.9
  28. 165
  29. 6.5
  30. 135
  31. 115.5
  32. 10.5
  33. 19
  34. 34
  35. 73
  36. 2.5
  37. 30
  38. 5.5
  39. 5.9
  40. 2.6

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