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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 585 · 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. 1.25% of 730 =
  2. 2.5% of 500 =
  3. 3.50% of 510 =
  4. 4.10% of 80 =
  5. 5.15% of 560 =
  6. 6.5% of 760 =
  7. 7.15% of 350 =
  8. 8.1% of 260 =
  9. 9.1% of 800 =
  10. 10.50% of 720 =
  11. 11.25% of 330 =
  12. 12.15% of 190 =
  13. 13.5% of 290 =
  14. 14.10% of 420 =
  15. 15.50% of 890 =
  16. 16.50% of 360 =
  17. 17.10% of 670 =
  18. 18.5% of 480 =
  19. 19.50% of 880 =
  20. 20.10% of 800 =
  21. 21.15% of 440 =
  22. 22.25% of 390 =
  23. 23.5% of 20 =
  24. 24.15% of 370 =
  25. 25.15% of 520 =
  26. 26.25% of 40 =
  27. 27.20% of 570 =
  28. 28.15% of 690 =
  29. 29.20% of 120 =
  30. 30.1% of 450 =
  31. 31.25% of 510 =
  32. 32.50% of 440 =
  33. 33.50% of 540 =
  34. 34.10% of 790 =
  35. 35.5% of 380 =
  36. 36.5% of 250 =
  37. 37.20% of 360 =
  38. 38.25% of 680 =
  39. 39.10% of 150 =
  40. 40.20% of 290 =

Answer key

  1. 182.5
  2. 25
  3. 255
  4. 8
  5. 84
  6. 38
  7. 52.5
  8. 2.6
  9. 8
  10. 360
  11. 82.5
  12. 28.5
  13. 14.5
  14. 42
  15. 445
  16. 180
  17. 67
  18. 24
  19. 440
  20. 80
  21. 66
  22. 97.5
  23. 1
  24. 55.5
  25. 78
  26. 10
  27. 114
  28. 103.5
  29. 24
  30. 4.5
  31. 127.5
  32. 220
  33. 270
  34. 79
  35. 19
  36. 12.5
  37. 72
  38. 170
  39. 15
  40. 58

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