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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 998 · 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 880 =
  2. 2.15% of 430 =
  3. 3.15% of 480 =
  4. 4.10% of 200 =
  5. 5.1% of 430 =
  6. 6.50% of 110 =
  7. 7.5% of 130 =
  8. 8.15% of 610 =
  9. 9.5% of 190 =
  10. 10.1% of 870 =
  11. 11.25% of 50 =
  12. 12.10% of 20 =
  13. 13.25% of 870 =
  14. 14.20% of 510 =
  15. 15.5% of 550 =
  16. 16.20% of 760 =
  17. 17.15% of 490 =
  18. 18.10% of 100 =
  19. 19.5% of 270 =
  20. 20.15% of 280 =
  21. 21.25% of 330 =
  22. 22.5% of 220 =
  23. 23.15% of 780 =
  24. 24.25% of 650 =
  25. 25.25% of 160 =
  26. 26.15% of 820 =
  27. 27.20% of 530 =
  28. 28.5% of 70 =
  29. 29.25% of 680 =
  30. 30.1% of 390 =
  31. 31.1% of 180 =
  32. 32.20% of 530 =
  33. 33.5% of 190 =
  34. 34.1% of 340 =
  35. 35.15% of 380 =
  36. 36.10% of 560 =
  37. 37.5% of 270 =
  38. 38.1% of 500 =
  39. 39.10% of 710 =
  40. 40.50% of 290 =

Answer key

  1. 88
  2. 64.5
  3. 72
  4. 20
  5. 4.3
  6. 55
  7. 6.5
  8. 91.5
  9. 9.5
  10. 8.7
  11. 12.5
  12. 2
  13. 217.5
  14. 102
  15. 27.5
  16. 152
  17. 73.5
  18. 10
  19. 13.5
  20. 42
  21. 82.5
  22. 11
  23. 117
  24. 162.5
  25. 40
  26. 123
  27. 106
  28. 3.5
  29. 170
  30. 3.9
  31. 1.8
  32. 106
  33. 9.5
  34. 3.4
  35. 57
  36. 56
  37. 13.5
  38. 5
  39. 71
  40. 145

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