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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 184 · 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 550 =
  2. 2.15% of 460 =
  3. 3.1% of 160 =
  4. 4.50% of 880 =
  5. 5.20% of 730 =
  6. 6.25% of 400 =
  7. 7.20% of 300 =
  8. 8.15% of 510 =
  9. 9.15% of 150 =
  10. 10.15% of 740 =
  11. 11.1% of 470 =
  12. 12.25% of 130 =
  13. 13.1% of 110 =
  14. 14.20% of 260 =
  15. 15.50% of 630 =
  16. 16.1% of 730 =
  17. 17.5% of 730 =
  18. 18.50% of 890 =
  19. 19.20% of 400 =
  20. 20.10% of 350 =
  21. 21.20% of 480 =
  22. 22.1% of 270 =
  23. 23.5% of 850 =
  24. 24.20% of 610 =
  25. 25.15% of 390 =
  26. 26.25% of 310 =
  27. 27.5% of 520 =
  28. 28.10% of 840 =
  29. 29.5% of 190 =
  30. 30.50% of 690 =
  31. 31.50% of 250 =
  32. 32.5% of 660 =
  33. 33.1% of 740 =
  34. 34.20% of 340 =
  35. 35.10% of 210 =
  36. 36.10% of 360 =
  37. 37.5% of 740 =
  38. 38.5% of 380 =
  39. 39.15% of 490 =
  40. 40.25% of 610 =

Answer key

  1. 5.5
  2. 69
  3. 1.6
  4. 440
  5. 146
  6. 100
  7. 60
  8. 76.5
  9. 22.5
  10. 111
  11. 4.7
  12. 32.5
  13. 1.1
  14. 52
  15. 315
  16. 7.3
  17. 36.5
  18. 445
  19. 80
  20. 35
  21. 96
  22. 2.7
  23. 42.5
  24. 122
  25. 58.5
  26. 77.5
  27. 26
  28. 84
  29. 9.5
  30. 345
  31. 125
  32. 33
  33. 7.4
  34. 68
  35. 21
  36. 36
  37. 37
  38. 19
  39. 73.5
  40. 152.5

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