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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 487 · 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. 2.50% of 270 =
  3. 3.20% of 250 =
  4. 4.15% of 660 =
  5. 5.15% of 50 =
  6. 6.5% of 80 =
  7. 7.5% of 150 =
  8. 8.5% of 770 =
  9. 9.10% of 160 =
  10. 10.10% of 630 =
  11. 11.5% of 180 =
  12. 12.10% of 790 =
  13. 13.5% of 90 =
  14. 14.50% of 880 =
  15. 15.20% of 260 =
  16. 16.15% of 260 =
  17. 17.10% of 630 =
  18. 18.5% of 740 =
  19. 19.20% of 770 =
  20. 20.5% of 410 =
  21. 21.20% of 270 =
  22. 22.1% of 470 =
  23. 23.10% of 720 =
  24. 24.1% of 100 =
  25. 25.10% of 550 =
  26. 26.10% of 40 =
  27. 27.50% of 340 =
  28. 28.25% of 140 =
  29. 29.10% of 900 =
  30. 30.50% of 160 =
  31. 31.5% of 780 =
  32. 32.50% of 650 =
  33. 33.10% of 830 =
  34. 34.10% of 290 =
  35. 35.10% of 200 =
  36. 36.5% of 270 =
  37. 37.1% of 50 =
  38. 38.1% of 230 =
  39. 39.15% of 430 =
  40. 40.20% of 640 =

Answer key

  1. 19.5
  2. 135
  3. 50
  4. 99
  5. 7.5
  6. 4
  7. 7.5
  8. 38.5
  9. 16
  10. 63
  11. 9
  12. 79
  13. 4.5
  14. 440
  15. 52
  16. 39
  17. 63
  18. 37
  19. 154
  20. 20.5
  21. 54
  22. 4.7
  23. 72
  24. 1
  25. 55
  26. 4
  27. 170
  28. 35
  29. 90
  30. 80
  31. 39
  32. 325
  33. 83
  34. 29
  35. 20
  36. 13.5
  37. 0.5
  38. 2.3
  39. 64.5
  40. 128

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