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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 919 · 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. 1.15% of 580 =
  2. 2.25% of 110 =
  3. 3.1% of 590 =
  4. 4.50% of 620 =
  5. 5.20% of 580 =
  6. 6.10% of 860 =
  7. 7.1% of 720 =
  8. 8.20% of 680 =
  9. 9.50% of 160 =
  10. 10.50% of 190 =
  11. 11.1% of 580 =
  12. 12.50% of 370 =
  13. 13.20% of 850 =
  14. 14.15% of 800 =
  15. 15.5% of 630 =
  16. 16.5% of 120 =
  17. 17.20% of 290 =
  18. 18.10% of 130 =
  19. 19.50% of 800 =
  20. 20.25% of 440 =
  21. 21.10% of 130 =
  22. 22.50% of 280 =
  23. 23.10% of 860 =
  24. 24.5% of 730 =
  25. 25.50% of 870 =
  26. 26.15% of 610 =
  27. 27.15% of 130 =
  28. 28.20% of 70 =
  29. 29.10% of 210 =
  30. 30.5% of 110 =
  31. 31.5% of 730 =
  32. 32.1% of 660 =
  33. 33.50% of 440 =
  34. 34.20% of 320 =
  35. 35.25% of 210 =
  36. 36.15% of 710 =
  37. 37.5% of 470 =
  38. 38.15% of 900 =
  39. 39.50% of 490 =
  40. 40.10% of 90 =

Answer key

  1. 87
  2. 27.5
  3. 5.9
  4. 310
  5. 116
  6. 86
  7. 7.2
  8. 136
  9. 80
  10. 95
  11. 5.8
  12. 185
  13. 170
  14. 120
  15. 31.5
  16. 6
  17. 58
  18. 13
  19. 400
  20. 110
  21. 13
  22. 140
  23. 86
  24. 36.5
  25. 435
  26. 91.5
  27. 19.5
  28. 14
  29. 21
  30. 5.5
  31. 36.5
  32. 6.6
  33. 220
  34. 64
  35. 52.5
  36. 106.5
  37. 23.5
  38. 135
  39. 245
  40. 9

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