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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 984 · 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 110 =
  2. 2.10% of 150 =
  3. 3.10% of 140 =
  4. 4.20% of 730 =
  5. 5.25% of 780 =
  6. 6.1% of 90 =
  7. 7.1% of 310 =
  8. 8.5% of 860 =
  9. 9.10% of 670 =
  10. 10.20% of 870 =
  11. 11.15% of 230 =
  12. 12.25% of 340 =
  13. 13.50% of 420 =
  14. 14.5% of 720 =
  15. 15.1% of 110 =
  16. 16.50% of 390 =
  17. 17.15% of 900 =
  18. 18.10% of 440 =
  19. 19.15% of 290 =
  20. 20.5% of 280 =
  21. 21.1% of 350 =
  22. 22.10% of 30 =
  23. 23.10% of 260 =
  24. 24.15% of 900 =
  25. 25.1% of 90 =
  26. 26.50% of 840 =
  27. 27.50% of 340 =
  28. 28.1% of 370 =
  29. 29.10% of 770 =
  30. 30.15% of 250 =
  31. 31.5% of 130 =
  32. 32.15% of 670 =
  33. 33.10% of 170 =
  34. 34.15% of 870 =
  35. 35.1% of 490 =
  36. 36.50% of 650 =
  37. 37.10% of 580 =
  38. 38.20% of 450 =
  39. 39.20% of 510 =
  40. 40.15% of 870 =

Answer key

  1. 16.5
  2. 15
  3. 14
  4. 146
  5. 195
  6. 0.9
  7. 3.1
  8. 43
  9. 67
  10. 174
  11. 34.5
  12. 85
  13. 210
  14. 36
  15. 1.1
  16. 195
  17. 135
  18. 44
  19. 43.5
  20. 14
  21. 3.5
  22. 3
  23. 26
  24. 135
  25. 0.9
  26. 420
  27. 170
  28. 3.7
  29. 77
  30. 37.5
  31. 6.5
  32. 100.5
  33. 17
  34. 130.5
  35. 4.9
  36. 325
  37. 58
  38. 90
  39. 102
  40. 130.5

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