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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 489 · 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. 1.50% of 520 =
  2. 2.15% of 170 =
  3. 3.20% of 600 =
  4. 4.10% of 250 =
  5. 5.10% of 710 =
  6. 6.10% of 680 =
  7. 7.5% of 60 =
  8. 8.25% of 900 =
  9. 9.25% of 500 =
  10. 10.5% of 340 =
  11. 11.50% of 760 =
  12. 12.10% of 340 =
  13. 13.10% of 170 =
  14. 14.20% of 470 =
  15. 15.25% of 230 =
  16. 16.10% of 550 =
  17. 17.1% of 50 =
  18. 18.15% of 640 =
  19. 19.50% of 620 =
  20. 20.25% of 260 =
  21. 21.50% of 150 =
  22. 22.10% of 640 =
  23. 23.25% of 770 =
  24. 24.50% of 70 =
  25. 25.10% of 850 =
  26. 26.5% of 690 =
  27. 27.50% of 440 =
  28. 28.10% of 520 =
  29. 29.1% of 350 =
  30. 30.20% of 80 =
  31. 31.5% of 430 =
  32. 32.20% of 590 =
  33. 33.25% of 760 =
  34. 34.10% of 20 =
  35. 35.10% of 320 =
  36. 36.15% of 740 =
  37. 37.5% of 710 =
  38. 38.20% of 630 =
  39. 39.25% of 820 =
  40. 40.1% of 270 =

Answer key

  1. 260
  2. 25.5
  3. 120
  4. 25
  5. 71
  6. 68
  7. 3
  8. 225
  9. 125
  10. 17
  11. 380
  12. 34
  13. 17
  14. 94
  15. 57.5
  16. 55
  17. 0.5
  18. 96
  19. 310
  20. 65
  21. 75
  22. 64
  23. 192.5
  24. 35
  25. 85
  26. 34.5
  27. 220
  28. 52
  29. 3.5
  30. 16
  31. 21.5
  32. 118
  33. 190
  34. 2
  35. 32
  36. 111
  37. 35.5
  38. 126
  39. 205
  40. 2.7

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