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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 385 · 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. 1.5% of 30 =
  2. 2.25% of 640 =
  3. 3.15% of 840 =
  4. 4.20% of 580 =
  5. 5.50% of 170 =
  6. 6.1% of 250 =
  7. 7.10% of 860 =
  8. 8.50% of 580 =
  9. 9.50% of 630 =
  10. 10.10% of 400 =
  11. 11.10% of 320 =
  12. 12.5% of 430 =
  13. 13.10% of 520 =
  14. 14.10% of 260 =
  15. 15.50% of 590 =
  16. 16.20% of 750 =
  17. 17.1% of 580 =
  18. 18.50% of 150 =
  19. 19.20% of 560 =
  20. 20.25% of 610 =
  21. 21.20% of 50 =
  22. 22.5% of 100 =
  23. 23.10% of 500 =
  24. 24.15% of 850 =
  25. 25.10% of 760 =
  26. 26.15% of 90 =
  27. 27.1% of 580 =
  28. 28.15% of 190 =
  29. 29.1% of 140 =
  30. 30.20% of 70 =
  31. 31.50% of 870 =
  32. 32.15% of 850 =
  33. 33.10% of 140 =
  34. 34.50% of 280 =
  35. 35.50% of 900 =
  36. 36.5% of 860 =
  37. 37.20% of 870 =
  38. 38.10% of 440 =
  39. 39.10% of 230 =
  40. 40.20% of 710 =

Answer key

  1. 1.5
  2. 160
  3. 126
  4. 116
  5. 85
  6. 2.5
  7. 86
  8. 290
  9. 315
  10. 40
  11. 32
  12. 21.5
  13. 52
  14. 26
  15. 295
  16. 150
  17. 5.8
  18. 75
  19. 112
  20. 152.5
  21. 10
  22. 5
  23. 50
  24. 127.5
  25. 76
  26. 13.5
  27. 5.8
  28. 28.5
  29. 1.4
  30. 14
  31. 435
  32. 127.5
  33. 14
  34. 140
  35. 450
  36. 43
  37. 174
  38. 44
  39. 23
  40. 142

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