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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 949 · 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. 1.20% of 560 =
  2. 2.25% of 710 =
  3. 3.10% of 80 =
  4. 4.5% of 870 =
  5. 5.20% of 500 =
  6. 6.25% of 550 =
  7. 7.1% of 640 =
  8. 8.50% of 800 =
  9. 9.10% of 340 =
  10. 10.1% of 830 =
  11. 11.10% of 420 =
  12. 12.5% of 270 =
  13. 13.5% of 240 =
  14. 14.1% of 410 =
  15. 15.25% of 180 =
  16. 16.15% of 490 =
  17. 17.5% of 890 =
  18. 18.1% of 80 =
  19. 19.15% of 550 =
  20. 20.1% of 110 =
  21. 21.1% of 270 =
  22. 22.10% of 330 =
  23. 23.50% of 480 =
  24. 24.1% of 30 =
  25. 25.50% of 650 =
  26. 26.50% of 260 =
  27. 27.20% of 590 =
  28. 28.25% of 50 =
  29. 29.25% of 390 =
  30. 30.1% of 590 =
  31. 31.50% of 270 =
  32. 32.1% of 160 =
  33. 33.5% of 790 =
  34. 34.10% of 860 =
  35. 35.50% of 150 =
  36. 36.25% of 600 =
  37. 37.15% of 470 =
  38. 38.5% of 200 =
  39. 39.20% of 390 =
  40. 40.50% of 380 =

Answer key

  1. 112
  2. 177.5
  3. 8
  4. 43.5
  5. 100
  6. 137.5
  7. 6.4
  8. 400
  9. 34
  10. 8.3
  11. 42
  12. 13.5
  13. 12
  14. 4.1
  15. 45
  16. 73.5
  17. 44.5
  18. 0.8
  19. 82.5
  20. 1.1
  21. 2.7
  22. 33
  23. 240
  24. 0.3
  25. 325
  26. 130
  27. 118
  28. 12.5
  29. 97.5
  30. 5.9
  31. 135
  32. 1.6
  33. 39.5
  34. 86
  35. 75
  36. 150
  37. 70.5
  38. 10
  39. 78
  40. 190

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