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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 282 · 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. 1.20% of 320 =
  2. 2.15% of 70 =
  3. 3.20% of 160 =
  4. 4.50% of 520 =
  5. 5.25% of 280 =
  6. 6.50% of 660 =
  7. 7.1% of 430 =
  8. 8.10% of 550 =
  9. 9.1% of 780 =
  10. 10.5% of 190 =
  11. 11.50% of 240 =
  12. 12.10% of 570 =
  13. 13.5% of 80 =
  14. 14.5% of 690 =
  15. 15.50% of 770 =
  16. 16.20% of 90 =
  17. 17.20% of 790 =
  18. 18.50% of 100 =
  19. 19.25% of 620 =
  20. 20.1% of 260 =
  21. 21.10% of 120 =
  22. 22.5% of 40 =
  23. 23.10% of 220 =
  24. 24.20% of 620 =
  25. 25.15% of 290 =
  26. 26.20% of 630 =
  27. 27.5% of 680 =
  28. 28.1% of 740 =
  29. 29.50% of 830 =
  30. 30.25% of 830 =
  31. 31.5% of 640 =
  32. 32.50% of 120 =
  33. 33.10% of 350 =
  34. 34.15% of 150 =
  35. 35.25% of 540 =
  36. 36.5% of 270 =
  37. 37.25% of 680 =
  38. 38.10% of 870 =
  39. 39.20% of 470 =
  40. 40.50% of 100 =

Answer key

  1. 64
  2. 10.5
  3. 32
  4. 260
  5. 70
  6. 330
  7. 4.3
  8. 55
  9. 7.8
  10. 9.5
  11. 120
  12. 57
  13. 4
  14. 34.5
  15. 385
  16. 18
  17. 158
  18. 50
  19. 155
  20. 2.6
  21. 12
  22. 2
  23. 22
  24. 124
  25. 43.5
  26. 126
  27. 34
  28. 7.4
  29. 415
  30. 207.5
  31. 32
  32. 60
  33. 35
  34. 22.5
  35. 135
  36. 13.5
  37. 170
  38. 87
  39. 94
  40. 50

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