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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 768 · 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 330 =
  2. 2.5% of 270 =
  3. 3.25% of 520 =
  4. 4.50% of 590 =
  5. 5.1% of 170 =
  6. 6.10% of 90 =
  7. 7.25% of 680 =
  8. 8.15% of 120 =
  9. 9.25% of 140 =
  10. 10.5% of 500 =
  11. 11.50% of 630 =
  12. 12.20% of 290 =
  13. 13.1% of 650 =
  14. 14.10% of 500 =
  15. 15.20% of 540 =
  16. 16.1% of 630 =
  17. 17.10% of 30 =
  18. 18.1% of 80 =
  19. 19.20% of 60 =
  20. 20.10% of 610 =
  21. 21.1% of 20 =
  22. 22.15% of 580 =
  23. 23.50% of 470 =
  24. 24.50% of 820 =
  25. 25.15% of 530 =
  26. 26.25% of 330 =
  27. 27.1% of 860 =
  28. 28.10% of 390 =
  29. 29.5% of 830 =
  30. 30.1% of 200 =
  31. 31.50% of 770 =
  32. 32.20% of 120 =
  33. 33.1% of 480 =
  34. 34.50% of 890 =
  35. 35.1% of 210 =
  36. 36.25% of 600 =
  37. 37.10% of 640 =
  38. 38.20% of 260 =
  39. 39.5% of 160 =
  40. 40.50% of 360 =

Answer key

  1. 82.5
  2. 13.5
  3. 130
  4. 295
  5. 1.7
  6. 9
  7. 170
  8. 18
  9. 35
  10. 25
  11. 315
  12. 58
  13. 6.5
  14. 50
  15. 108
  16. 6.3
  17. 3
  18. 0.8
  19. 12
  20. 61
  21. 0.2
  22. 87
  23. 235
  24. 410
  25. 79.5
  26. 82.5
  27. 8.6
  28. 39
  29. 41.5
  30. 2
  31. 385
  32. 24
  33. 4.8
  34. 445
  35. 2.1
  36. 150
  37. 64
  38. 52
  39. 8
  40. 180

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