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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 261 · 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. 1.15% of 760 =
  2. 2.1% of 500 =
  3. 3.15% of 260 =
  4. 4.25% of 30 =
  5. 5.15% of 430 =
  6. 6.25% of 60 =
  7. 7.5% of 370 =
  8. 8.10% of 90 =
  9. 9.5% of 30 =
  10. 10.10% of 110 =
  11. 11.20% of 800 =
  12. 12.25% of 220 =
  13. 13.10% of 250 =
  14. 14.15% of 130 =
  15. 15.1% of 760 =
  16. 16.5% of 520 =
  17. 17.20% of 450 =
  18. 18.10% of 30 =
  19. 19.20% of 180 =
  20. 20.15% of 490 =
  21. 21.5% of 390 =
  22. 22.5% of 890 =
  23. 23.50% of 430 =
  24. 24.15% of 120 =
  25. 25.1% of 230 =
  26. 26.50% of 180 =
  27. 27.1% of 290 =
  28. 28.25% of 130 =
  29. 29.5% of 20 =
  30. 30.1% of 460 =
  31. 31.25% of 90 =
  32. 32.25% of 250 =
  33. 33.50% of 560 =
  34. 34.25% of 270 =
  35. 35.20% of 420 =
  36. 36.10% of 320 =
  37. 37.50% of 810 =
  38. 38.5% of 410 =
  39. 39.50% of 650 =
  40. 40.10% of 370 =

Answer key

  1. 114
  2. 5
  3. 39
  4. 7.5
  5. 64.5
  6. 15
  7. 18.5
  8. 9
  9. 1.5
  10. 11
  11. 160
  12. 55
  13. 25
  14. 19.5
  15. 7.6
  16. 26
  17. 90
  18. 3
  19. 36
  20. 73.5
  21. 19.5
  22. 44.5
  23. 215
  24. 18
  25. 2.3
  26. 90
  27. 2.9
  28. 32.5
  29. 1
  30. 4.6
  31. 22.5
  32. 62.5
  33. 280
  34. 67.5
  35. 84
  36. 32
  37. 405
  38. 20.5
  39. 325
  40. 37

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