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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 134 · 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 780 =
  2. 2.25% of 730 =
  3. 3.10% of 300 =
  4. 4.25% of 50 =
  5. 5.5% of 620 =
  6. 6.15% of 60 =
  7. 7.5% of 290 =
  8. 8.50% of 40 =
  9. 9.20% of 130 =
  10. 10.1% of 600 =
  11. 11.10% of 370 =
  12. 12.5% of 610 =
  13. 13.1% of 260 =
  14. 14.20% of 260 =
  15. 15.10% of 690 =
  16. 16.15% of 870 =
  17. 17.25% of 670 =
  18. 18.10% of 640 =
  19. 19.15% of 460 =
  20. 20.20% of 110 =
  21. 21.25% of 100 =
  22. 22.15% of 580 =
  23. 23.20% of 310 =
  24. 24.25% of 150 =
  25. 25.10% of 40 =
  26. 26.20% of 200 =
  27. 27.5% of 690 =
  28. 28.1% of 420 =
  29. 29.5% of 30 =
  30. 30.20% of 760 =
  31. 31.5% of 580 =
  32. 32.20% of 740 =
  33. 33.50% of 130 =
  34. 34.50% of 130 =
  35. 35.25% of 220 =
  36. 36.25% of 260 =
  37. 37.15% of 230 =
  38. 38.5% of 520 =
  39. 39.20% of 550 =
  40. 40.10% of 400 =

Answer key

  1. 390
  2. 182.5
  3. 30
  4. 12.5
  5. 31
  6. 9
  7. 14.5
  8. 20
  9. 26
  10. 6
  11. 37
  12. 30.5
  13. 2.6
  14. 52
  15. 69
  16. 130.5
  17. 167.5
  18. 64
  19. 69
  20. 22
  21. 25
  22. 87
  23. 62
  24. 37.5
  25. 4
  26. 40
  27. 34.5
  28. 4.2
  29. 1.5
  30. 152
  31. 29
  32. 148
  33. 65
  34. 65
  35. 55
  36. 65
  37. 34.5
  38. 26
  39. 110
  40. 40

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