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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 893 · 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 260 =
  2. 2.5% of 80 =
  3. 3.10% of 890 =
  4. 4.20% of 770 =
  5. 5.20% of 650 =
  6. 6.10% of 130 =
  7. 7.10% of 90 =
  8. 8.10% of 450 =
  9. 9.50% of 510 =
  10. 10.50% of 510 =
  11. 11.50% of 270 =
  12. 12.25% of 460 =
  13. 13.1% of 300 =
  14. 14.10% of 380 =
  15. 15.20% of 790 =
  16. 16.10% of 740 =
  17. 17.5% of 800 =
  18. 18.1% of 880 =
  19. 19.20% of 900 =
  20. 20.50% of 800 =
  21. 21.10% of 770 =
  22. 22.20% of 310 =
  23. 23.15% of 490 =
  24. 24.10% of 720 =
  25. 25.10% of 820 =
  26. 26.15% of 110 =
  27. 27.1% of 450 =
  28. 28.10% of 560 =
  29. 29.20% of 810 =
  30. 30.10% of 120 =
  31. 31.10% of 200 =
  32. 32.20% of 470 =
  33. 33.50% of 500 =
  34. 34.50% of 330 =
  35. 35.5% of 240 =
  36. 36.5% of 260 =
  37. 37.5% of 510 =
  38. 38.5% of 620 =
  39. 39.20% of 190 =
  40. 40.15% of 550 =

Answer key

  1. 26
  2. 4
  3. 89
  4. 154
  5. 130
  6. 13
  7. 9
  8. 45
  9. 255
  10. 255
  11. 135
  12. 115
  13. 3
  14. 38
  15. 158
  16. 74
  17. 40
  18. 8.8
  19. 180
  20. 400
  21. 77
  22. 62
  23. 73.5
  24. 72
  25. 82
  26. 16.5
  27. 4.5
  28. 56
  29. 162
  30. 12
  31. 20
  32. 94
  33. 250
  34. 165
  35. 12
  36. 13
  37. 25.5
  38. 31
  39. 38
  40. 82.5

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