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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 734 · 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 740 =
  2. 2.25% of 210 =
  3. 3.10% of 230 =
  4. 4.20% of 160 =
  5. 5.5% of 300 =
  6. 6.5% of 360 =
  7. 7.20% of 60 =
  8. 8.20% of 420 =
  9. 9.25% of 380 =
  10. 10.15% of 170 =
  11. 11.15% of 370 =
  12. 12.50% of 550 =
  13. 13.1% of 50 =
  14. 14.5% of 20 =
  15. 15.1% of 190 =
  16. 16.50% of 700 =
  17. 17.50% of 70 =
  18. 18.10% of 280 =
  19. 19.10% of 380 =
  20. 20.15% of 200 =
  21. 21.10% of 810 =
  22. 22.10% of 360 =
  23. 23.20% of 450 =
  24. 24.10% of 430 =
  25. 25.5% of 310 =
  26. 26.5% of 770 =
  27. 27.50% of 40 =
  28. 28.15% of 450 =
  29. 29.25% of 790 =
  30. 30.5% of 740 =
  31. 31.25% of 390 =
  32. 32.20% of 720 =
  33. 33.15% of 860 =
  34. 34.20% of 100 =
  35. 35.10% of 480 =
  36. 36.15% of 140 =
  37. 37.50% of 750 =
  38. 38.10% of 70 =
  39. 39.10% of 510 =
  40. 40.50% of 780 =

Answer key

  1. 111
  2. 52.5
  3. 23
  4. 32
  5. 15
  6. 18
  7. 12
  8. 84
  9. 95
  10. 25.5
  11. 55.5
  12. 275
  13. 0.5
  14. 1
  15. 1.9
  16. 350
  17. 35
  18. 28
  19. 38
  20. 30
  21. 81
  22. 36
  23. 90
  24. 43
  25. 15.5
  26. 38.5
  27. 20
  28. 67.5
  29. 197.5
  30. 37
  31. 97.5
  32. 144
  33. 129
  34. 20
  35. 48
  36. 21
  37. 375
  38. 7
  39. 51
  40. 390

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