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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 526 · 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 590 =
  2. 2.1% of 680 =
  3. 3.20% of 40 =
  4. 4.15% of 480 =
  5. 5.20% of 600 =
  6. 6.5% of 70 =
  7. 7.10% of 150 =
  8. 8.5% of 190 =
  9. 9.20% of 890 =
  10. 10.25% of 440 =
  11. 11.20% of 140 =
  12. 12.15% of 230 =
  13. 13.50% of 420 =
  14. 14.5% of 200 =
  15. 15.50% of 850 =
  16. 16.50% of 230 =
  17. 17.50% of 790 =
  18. 18.25% of 120 =
  19. 19.15% of 640 =
  20. 20.5% of 260 =
  21. 21.10% of 140 =
  22. 22.15% of 450 =
  23. 23.1% of 770 =
  24. 24.5% of 630 =
  25. 25.1% of 230 =
  26. 26.20% of 650 =
  27. 27.5% of 590 =
  28. 28.1% of 730 =
  29. 29.10% of 580 =
  30. 30.10% of 240 =
  31. 31.10% of 580 =
  32. 32.10% of 580 =
  33. 33.20% of 110 =
  34. 34.25% of 110 =
  35. 35.20% of 390 =
  36. 36.50% of 380 =
  37. 37.5% of 590 =
  38. 38.50% of 520 =
  39. 39.1% of 510 =
  40. 40.20% of 340 =

Answer key

  1. 5.9
  2. 6.8
  3. 8
  4. 72
  5. 120
  6. 3.5
  7. 15
  8. 9.5
  9. 178
  10. 110
  11. 28
  12. 34.5
  13. 210
  14. 10
  15. 425
  16. 115
  17. 395
  18. 30
  19. 96
  20. 13
  21. 14
  22. 67.5
  23. 7.7
  24. 31.5
  25. 2.3
  26. 130
  27. 29.5
  28. 7.3
  29. 58
  30. 24
  31. 58
  32. 58
  33. 22
  34. 27.5
  35. 78
  36. 190
  37. 29.5
  38. 260
  39. 5.1
  40. 68

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