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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 715 · 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. 1.5% of 760 =
  2. 2.50% of 560 =
  3. 3.1% of 250 =
  4. 4.50% of 630 =
  5. 5.15% of 590 =
  6. 6.15% of 100 =
  7. 7.15% of 650 =
  8. 8.50% of 880 =
  9. 9.20% of 880 =
  10. 10.5% of 270 =
  11. 11.25% of 220 =
  12. 12.10% of 570 =
  13. 13.20% of 250 =
  14. 14.20% of 510 =
  15. 15.5% of 540 =
  16. 16.10% of 740 =
  17. 17.15% of 900 =
  18. 18.50% of 270 =
  19. 19.25% of 460 =
  20. 20.25% of 190 =
  21. 21.20% of 550 =
  22. 22.20% of 250 =
  23. 23.10% of 760 =
  24. 24.20% of 60 =
  25. 25.25% of 310 =
  26. 26.10% of 140 =
  27. 27.5% of 900 =
  28. 28.15% of 870 =
  29. 29.5% of 350 =
  30. 30.10% of 850 =
  31. 31.20% of 120 =
  32. 32.25% of 390 =
  33. 33.1% of 890 =
  34. 34.5% of 300 =
  35. 35.15% of 180 =
  36. 36.1% of 690 =
  37. 37.1% of 870 =
  38. 38.10% of 50 =
  39. 39.50% of 640 =
  40. 40.10% of 470 =

Answer key

  1. 38
  2. 280
  3. 2.5
  4. 315
  5. 88.5
  6. 15
  7. 97.5
  8. 440
  9. 176
  10. 13.5
  11. 55
  12. 57
  13. 50
  14. 102
  15. 27
  16. 74
  17. 135
  18. 135
  19. 115
  20. 47.5
  21. 110
  22. 50
  23. 76
  24. 12
  25. 77.5
  26. 14
  27. 45
  28. 130.5
  29. 17.5
  30. 85
  31. 24
  32. 97.5
  33. 8.9
  34. 15
  35. 27
  36. 6.9
  37. 8.7
  38. 5
  39. 320
  40. 47

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