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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 702 · 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 560 =
  2. 2.1% of 170 =
  3. 3.25% of 550 =
  4. 4.20% of 650 =
  5. 5.1% of 410 =
  6. 6.10% of 870 =
  7. 7.50% of 390 =
  8. 8.10% of 430 =
  9. 9.25% of 720 =
  10. 10.50% of 320 =
  11. 11.20% of 860 =
  12. 12.5% of 160 =
  13. 13.10% of 440 =
  14. 14.1% of 530 =
  15. 15.5% of 570 =
  16. 16.10% of 620 =
  17. 17.25% of 270 =
  18. 18.50% of 280 =
  19. 19.50% of 360 =
  20. 20.10% of 340 =
  21. 21.15% of 510 =
  22. 22.10% of 350 =
  23. 23.50% of 510 =
  24. 24.50% of 110 =
  25. 25.15% of 740 =
  26. 26.1% of 210 =
  27. 27.10% of 160 =
  28. 28.50% of 310 =
  29. 29.1% of 160 =
  30. 30.10% of 530 =
  31. 31.50% of 100 =
  32. 32.50% of 390 =
  33. 33.15% of 310 =
  34. 34.1% of 40 =
  35. 35.50% of 770 =
  36. 36.25% of 130 =
  37. 37.50% of 900 =
  38. 38.15% of 610 =
  39. 39.20% of 420 =
  40. 40.1% of 660 =

Answer key

  1. 56
  2. 1.7
  3. 137.5
  4. 130
  5. 4.1
  6. 87
  7. 195
  8. 43
  9. 180
  10. 160
  11. 172
  12. 8
  13. 44
  14. 5.3
  15. 28.5
  16. 62
  17. 67.5
  18. 140
  19. 180
  20. 34
  21. 76.5
  22. 35
  23. 255
  24. 55
  25. 111
  26. 2.1
  27. 16
  28. 155
  29. 1.6
  30. 53
  31. 50
  32. 195
  33. 46.5
  34. 0.4
  35. 385
  36. 32.5
  37. 450
  38. 91.5
  39. 84
  40. 6.6

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