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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 994 · 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. 2.25% of 590 =
  3. 3.20% of 620 =
  4. 4.15% of 640 =
  5. 5.10% of 310 =
  6. 6.25% of 770 =
  7. 7.25% of 270 =
  8. 8.20% of 520 =
  9. 9.50% of 530 =
  10. 10.10% of 680 =
  11. 11.15% of 670 =
  12. 12.10% of 200 =
  13. 13.5% of 150 =
  14. 14.50% of 150 =
  15. 15.5% of 140 =
  16. 16.20% of 580 =
  17. 17.20% of 800 =
  18. 18.1% of 800 =
  19. 19.15% of 280 =
  20. 20.10% of 40 =
  21. 21.10% of 870 =
  22. 22.20% of 470 =
  23. 23.5% of 480 =
  24. 24.5% of 890 =
  25. 25.15% of 480 =
  26. 26.50% of 110 =
  27. 27.50% of 620 =
  28. 28.10% of 200 =
  29. 29.1% of 40 =
  30. 30.25% of 780 =
  31. 31.20% of 720 =
  32. 32.15% of 290 =
  33. 33.50% of 110 =
  34. 34.15% of 620 =
  35. 35.5% of 80 =
  36. 36.25% of 90 =
  37. 37.20% of 170 =
  38. 38.1% of 800 =
  39. 39.1% of 640 =
  40. 40.20% of 800 =

Answer key

  1. 56
  2. 147.5
  3. 124
  4. 96
  5. 31
  6. 192.5
  7. 67.5
  8. 104
  9. 265
  10. 68
  11. 100.5
  12. 20
  13. 7.5
  14. 75
  15. 7
  16. 116
  17. 160
  18. 8
  19. 42
  20. 4
  21. 87
  22. 94
  23. 24
  24. 44.5
  25. 72
  26. 55
  27. 310
  28. 20
  29. 0.4
  30. 195
  31. 144
  32. 43.5
  33. 55
  34. 93
  35. 4
  36. 22.5
  37. 34
  38. 8
  39. 6.4
  40. 160

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