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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 15 · 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 270 =
  2. 2.10% of 870 =
  3. 3.50% of 80 =
  4. 4.1% of 570 =
  5. 5.10% of 260 =
  6. 6.5% of 130 =
  7. 7.5% of 260 =
  8. 8.10% of 840 =
  9. 9.10% of 220 =
  10. 10.5% of 60 =
  11. 11.1% of 570 =
  12. 12.5% of 820 =
  13. 13.25% of 690 =
  14. 14.50% of 520 =
  15. 15.25% of 320 =
  16. 16.10% of 710 =
  17. 17.50% of 690 =
  18. 18.20% of 140 =
  19. 19.5% of 890 =
  20. 20.50% of 500 =
  21. 21.20% of 880 =
  22. 22.5% of 570 =
  23. 23.1% of 540 =
  24. 24.20% of 740 =
  25. 25.50% of 70 =
  26. 26.1% of 50 =
  27. 27.1% of 500 =
  28. 28.25% of 260 =
  29. 29.25% of 600 =
  30. 30.15% of 170 =
  31. 31.1% of 180 =
  32. 32.20% of 120 =
  33. 33.10% of 40 =
  34. 34.50% of 210 =
  35. 35.20% of 330 =
  36. 36.20% of 360 =
  37. 37.25% of 650 =
  38. 38.10% of 650 =
  39. 39.5% of 340 =
  40. 40.10% of 50 =

Answer key

  1. 40.5
  2. 87
  3. 40
  4. 5.7
  5. 26
  6. 6.5
  7. 13
  8. 84
  9. 22
  10. 3
  11. 5.7
  12. 41
  13. 172.5
  14. 260
  15. 80
  16. 71
  17. 345
  18. 28
  19. 44.5
  20. 250
  21. 176
  22. 28.5
  23. 5.4
  24. 148
  25. 35
  26. 0.5
  27. 5
  28. 65
  29. 150
  30. 25.5
  31. 1.8
  32. 24
  33. 4
  34. 105
  35. 66
  36. 72
  37. 162.5
  38. 65
  39. 17
  40. 5

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