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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 291 · 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 750 =
  2. 2.10% of 120 =
  3. 3.20% of 880 =
  4. 4.10% of 440 =
  5. 5.15% of 680 =
  6. 6.1% of 420 =
  7. 7.15% of 280 =
  8. 8.20% of 130 =
  9. 9.15% of 90 =
  10. 10.15% of 630 =
  11. 11.50% of 470 =
  12. 12.50% of 630 =
  13. 13.20% of 130 =
  14. 14.15% of 460 =
  15. 15.50% of 350 =
  16. 16.1% of 840 =
  17. 17.25% of 60 =
  18. 18.20% of 730 =
  19. 19.20% of 650 =
  20. 20.5% of 470 =
  21. 21.50% of 90 =
  22. 22.5% of 520 =
  23. 23.20% of 690 =
  24. 24.1% of 580 =
  25. 25.5% of 480 =
  26. 26.10% of 330 =
  27. 27.10% of 580 =
  28. 28.10% of 580 =
  29. 29.50% of 310 =
  30. 30.50% of 700 =
  31. 31.5% of 80 =
  32. 32.1% of 570 =
  33. 33.15% of 130 =
  34. 34.1% of 650 =
  35. 35.15% of 230 =
  36. 36.10% of 800 =
  37. 37.25% of 200 =
  38. 38.20% of 90 =
  39. 39.10% of 220 =
  40. 40.10% of 560 =

Answer key

  1. 375
  2. 12
  3. 176
  4. 44
  5. 102
  6. 4.2
  7. 42
  8. 26
  9. 13.5
  10. 94.5
  11. 235
  12. 315
  13. 26
  14. 69
  15. 175
  16. 8.4
  17. 15
  18. 146
  19. 130
  20. 23.5
  21. 45
  22. 26
  23. 138
  24. 5.8
  25. 24
  26. 33
  27. 58
  28. 58
  29. 155
  30. 350
  31. 4
  32. 5.7
  33. 19.5
  34. 6.5
  35. 34.5
  36. 80
  37. 50
  38. 18
  39. 22
  40. 56

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