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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 655 · 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 170 =
  2. 2.25% of 240 =
  3. 3.25% of 50 =
  4. 4.10% of 860 =
  5. 5.10% of 260 =
  6. 6.15% of 800 =
  7. 7.10% of 640 =
  8. 8.20% of 600 =
  9. 9.25% of 810 =
  10. 10.5% of 110 =
  11. 11.10% of 230 =
  12. 12.1% of 630 =
  13. 13.20% of 340 =
  14. 14.50% of 610 =
  15. 15.25% of 150 =
  16. 16.10% of 310 =
  17. 17.50% of 650 =
  18. 18.10% of 110 =
  19. 19.1% of 860 =
  20. 20.1% of 880 =
  21. 21.25% of 140 =
  22. 22.10% of 730 =
  23. 23.20% of 520 =
  24. 24.50% of 440 =
  25. 25.10% of 770 =
  26. 26.5% of 780 =
  27. 27.25% of 380 =
  28. 28.5% of 310 =
  29. 29.15% of 270 =
  30. 30.25% of 200 =
  31. 31.5% of 310 =
  32. 32.25% of 50 =
  33. 33.20% of 320 =
  34. 34.5% of 330 =
  35. 35.20% of 620 =
  36. 36.25% of 660 =
  37. 37.5% of 310 =
  38. 38.25% of 820 =
  39. 39.10% of 90 =
  40. 40.50% of 410 =

Answer key

  1. 85
  2. 60
  3. 12.5
  4. 86
  5. 26
  6. 120
  7. 64
  8. 120
  9. 202.5
  10. 5.5
  11. 23
  12. 6.3
  13. 68
  14. 305
  15. 37.5
  16. 31
  17. 325
  18. 11
  19. 8.6
  20. 8.8
  21. 35
  22. 73
  23. 104
  24. 220
  25. 77
  26. 39
  27. 95
  28. 15.5
  29. 40.5
  30. 50
  31. 15.5
  32. 12.5
  33. 64
  34. 16.5
  35. 124
  36. 165
  37. 15.5
  38. 205
  39. 9
  40. 205

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