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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 968 · 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. 1.50% of 880 =
  2. 2.50% of 590 =
  3. 3.25% of 40 =
  4. 4.25% of 320 =
  5. 5.1% of 300 =
  6. 6.20% of 210 =
  7. 7.25% of 840 =
  8. 8.1% of 310 =
  9. 9.20% of 680 =
  10. 10.25% of 730 =
  11. 11.20% of 600 =
  12. 12.1% of 810 =
  13. 13.50% of 170 =
  14. 14.15% of 500 =
  15. 15.5% of 80 =
  16. 16.25% of 390 =
  17. 17.25% of 660 =
  18. 18.5% of 710 =
  19. 19.25% of 490 =
  20. 20.20% of 220 =
  21. 21.20% of 440 =
  22. 22.5% of 40 =
  23. 23.1% of 820 =
  24. 24.5% of 560 =
  25. 25.5% of 630 =
  26. 26.1% of 400 =
  27. 27.25% of 660 =
  28. 28.15% of 620 =
  29. 29.15% of 120 =
  30. 30.20% of 20 =
  31. 31.5% of 20 =
  32. 32.15% of 30 =
  33. 33.10% of 660 =
  34. 34.10% of 320 =
  35. 35.10% of 190 =
  36. 36.15% of 900 =
  37. 37.1% of 660 =
  38. 38.25% of 300 =
  39. 39.1% of 420 =
  40. 40.15% of 610 =

Answer key

  1. 440
  2. 295
  3. 10
  4. 80
  5. 3
  6. 42
  7. 210
  8. 3.1
  9. 136
  10. 182.5
  11. 120
  12. 8.1
  13. 85
  14. 75
  15. 4
  16. 97.5
  17. 165
  18. 35.5
  19. 122.5
  20. 44
  21. 88
  22. 2
  23. 8.2
  24. 28
  25. 31.5
  26. 4
  27. 165
  28. 93
  29. 18
  30. 4
  31. 1
  32. 4.5
  33. 66
  34. 32
  35. 19
  36. 135
  37. 6.6
  38. 75
  39. 4.2
  40. 91.5

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