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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 418 · 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 130 =
  2. 2.15% of 340 =
  3. 3.25% of 870 =
  4. 4.15% of 510 =
  5. 5.10% of 150 =
  6. 6.5% of 260 =
  7. 7.10% of 860 =
  8. 8.15% of 430 =
  9. 9.50% of 460 =
  10. 10.15% of 880 =
  11. 11.1% of 760 =
  12. 12.1% of 190 =
  13. 13.10% of 830 =
  14. 14.5% of 760 =
  15. 15.10% of 250 =
  16. 16.15% of 210 =
  17. 17.5% of 640 =
  18. 18.50% of 440 =
  19. 19.50% of 670 =
  20. 20.5% of 90 =
  21. 21.20% of 470 =
  22. 22.1% of 540 =
  23. 23.15% of 620 =
  24. 24.50% of 460 =
  25. 25.20% of 270 =
  26. 26.25% of 150 =
  27. 27.15% of 90 =
  28. 28.10% of 550 =
  29. 29.5% of 690 =
  30. 30.25% of 240 =
  31. 31.5% of 20 =
  32. 32.10% of 710 =
  33. 33.10% of 420 =
  34. 34.10% of 50 =
  35. 35.20% of 200 =
  36. 36.25% of 690 =
  37. 37.5% of 210 =
  38. 38.1% of 620 =
  39. 39.5% of 410 =
  40. 40.20% of 870 =

Answer key

  1. 19.5
  2. 51
  3. 217.5
  4. 76.5
  5. 15
  6. 13
  7. 86
  8. 64.5
  9. 230
  10. 132
  11. 7.6
  12. 1.9
  13. 83
  14. 38
  15. 25
  16. 31.5
  17. 32
  18. 220
  19. 335
  20. 4.5
  21. 94
  22. 5.4
  23. 93
  24. 230
  25. 54
  26. 37.5
  27. 13.5
  28. 55
  29. 34.5
  30. 60
  31. 1
  32. 71
  33. 42
  34. 5
  35. 40
  36. 172.5
  37. 10.5
  38. 6.2
  39. 20.5
  40. 174

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