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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 233 · 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. 1.10% of 560 =
  2. 2.20% of 650 =
  3. 3.20% of 220 =
  4. 4.5% of 180 =
  5. 5.20% of 200 =
  6. 6.50% of 780 =
  7. 7.10% of 230 =
  8. 8.25% of 20 =
  9. 9.5% of 870 =
  10. 10.5% of 890 =
  11. 11.15% of 310 =
  12. 12.20% of 500 =
  13. 13.15% of 100 =
  14. 14.10% of 460 =
  15. 15.20% of 660 =
  16. 16.50% of 500 =
  17. 17.15% of 320 =
  18. 18.50% of 220 =
  19. 19.50% of 210 =
  20. 20.20% of 740 =
  21. 21.10% of 850 =
  22. 22.20% of 480 =
  23. 23.1% of 880 =
  24. 24.10% of 290 =
  25. 25.25% of 500 =
  26. 26.15% of 110 =
  27. 27.15% of 220 =
  28. 28.10% of 350 =
  29. 29.10% of 820 =
  30. 30.50% of 690 =
  31. 31.10% of 200 =
  32. 32.50% of 640 =
  33. 33.50% of 50 =
  34. 34.5% of 260 =
  35. 35.15% of 110 =
  36. 36.25% of 370 =
  37. 37.15% of 370 =
  38. 38.10% of 180 =
  39. 39.10% of 380 =
  40. 40.20% of 320 =

Answer key

  1. 56
  2. 130
  3. 44
  4. 9
  5. 40
  6. 390
  7. 23
  8. 5
  9. 43.5
  10. 44.5
  11. 46.5
  12. 100
  13. 15
  14. 46
  15. 132
  16. 250
  17. 48
  18. 110
  19. 105
  20. 148
  21. 85
  22. 96
  23. 8.8
  24. 29
  25. 125
  26. 16.5
  27. 33
  28. 35
  29. 82
  30. 345
  31. 20
  32. 320
  33. 25
  34. 13
  35. 16.5
  36. 92.5
  37. 55.5
  38. 18
  39. 38
  40. 64

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