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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 776 · 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 730 =
  2. 2.25% of 200 =
  3. 3.5% of 700 =
  4. 4.50% of 230 =
  5. 5.1% of 510 =
  6. 6.50% of 400 =
  7. 7.5% of 160 =
  8. 8.25% of 200 =
  9. 9.25% of 660 =
  10. 10.5% of 280 =
  11. 11.10% of 380 =
  12. 12.50% of 530 =
  13. 13.25% of 170 =
  14. 14.25% of 800 =
  15. 15.5% of 340 =
  16. 16.1% of 370 =
  17. 17.10% of 560 =
  18. 18.1% of 80 =
  19. 19.25% of 780 =
  20. 20.20% of 480 =
  21. 21.15% of 270 =
  22. 22.50% of 190 =
  23. 23.5% of 310 =
  24. 24.10% of 160 =
  25. 25.20% of 390 =
  26. 26.15% of 880 =
  27. 27.5% of 240 =
  28. 28.15% of 240 =
  29. 29.1% of 470 =
  30. 30.1% of 810 =
  31. 31.20% of 860 =
  32. 32.10% of 430 =
  33. 33.1% of 400 =
  34. 34.5% of 300 =
  35. 35.10% of 800 =
  36. 36.5% of 220 =
  37. 37.5% of 360 =
  38. 38.1% of 380 =
  39. 39.15% of 570 =
  40. 40.15% of 880 =

Answer key

  1. 365
  2. 50
  3. 35
  4. 115
  5. 5.1
  6. 200
  7. 8
  8. 50
  9. 165
  10. 14
  11. 38
  12. 265
  13. 42.5
  14. 200
  15. 17
  16. 3.7
  17. 56
  18. 0.8
  19. 195
  20. 96
  21. 40.5
  22. 95
  23. 15.5
  24. 16
  25. 78
  26. 132
  27. 12
  28. 36
  29. 4.7
  30. 8.1
  31. 172
  32. 43
  33. 4
  34. 15
  35. 80
  36. 11
  37. 18
  38. 3.8
  39. 85.5
  40. 132

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