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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 294 · 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 410 =
  2. 2.20% of 270 =
  3. 3.50% of 260 =
  4. 4.50% of 380 =
  5. 5.15% of 380 =
  6. 6.25% of 100 =
  7. 7.50% of 510 =
  8. 8.10% of 810 =
  9. 9.10% of 150 =
  10. 10.25% of 770 =
  11. 11.1% of 850 =
  12. 12.10% of 150 =
  13. 13.5% of 650 =
  14. 14.10% of 110 =
  15. 15.20% of 590 =
  16. 16.25% of 250 =
  17. 17.25% of 280 =
  18. 18.5% of 260 =
  19. 19.5% of 170 =
  20. 20.10% of 170 =
  21. 21.1% of 580 =
  22. 22.50% of 530 =
  23. 23.50% of 300 =
  24. 24.5% of 270 =
  25. 25.20% of 380 =
  26. 26.1% of 250 =
  27. 27.50% of 250 =
  28. 28.20% of 250 =
  29. 29.5% of 780 =
  30. 30.10% of 390 =
  31. 31.5% of 180 =
  32. 32.25% of 580 =
  33. 33.10% of 370 =
  34. 34.5% of 650 =
  35. 35.5% of 660 =
  36. 36.5% of 80 =
  37. 37.20% of 320 =
  38. 38.50% of 840 =
  39. 39.20% of 780 =
  40. 40.5% of 370 =

Answer key

  1. 205
  2. 54
  3. 130
  4. 190
  5. 57
  6. 25
  7. 255
  8. 81
  9. 15
  10. 192.5
  11. 8.5
  12. 15
  13. 32.5
  14. 11
  15. 118
  16. 62.5
  17. 70
  18. 13
  19. 8.5
  20. 17
  21. 5.8
  22. 265
  23. 150
  24. 13.5
  25. 76
  26. 2.5
  27. 125
  28. 50
  29. 39
  30. 39
  31. 9
  32. 145
  33. 37
  34. 32.5
  35. 33
  36. 4
  37. 64
  38. 420
  39. 156
  40. 18.5

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