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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 382 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.17 × 5 =
  2. 2.22 × 5 =
  3. 3.13 × 5 =
  4. 4.44 × 5 =
  5. 5.84 × 50 =
  6. 6.73 × 50 =
  7. 7.37 × 5 =
  8. 8.53 × 50 =
  9. 9.21 × 5 =
  10. 10.45 × 5 =
  11. 11.83 × 5 =
  12. 12.64 × 50 =
  13. 13.93 × 5 =
  14. 14.45 × 50 =
  15. 15.93 × 5 =
  16. 16.97 × 5 =
  17. 17.37 × 50 =
  18. 18.67 × 50 =
  19. 19.25 × 50 =
  20. 20.76 × 50 =
  21. 21.80 × 5 =
  22. 22.37 × 50 =
  23. 23.19 × 50 =
  24. 24.15 × 5 =
  25. 25.14 × 50 =
  26. 26.17 × 50 =
  27. 27.55 × 5 =
  28. 28.75 × 50 =
  29. 29.15 × 50 =
  30. 30.31 × 5 =
  31. 31.83 × 50 =
  32. 32.54 × 50 =
  33. 33.42 × 5 =
  34. 34.27 × 5 =
  35. 35.26 × 5 =
  36. 36.83 × 50 =
  37. 37.77 × 50 =
  38. 38.19 × 50 =
  39. 39.20 × 5 =
  40. 40.95 × 50 =

Answer key

  1. 85
  2. 110
  3. 65
  4. 220
  5. 4200
  6. 3650
  7. 185
  8. 2650
  9. 105
  10. 225
  11. 415
  12. 3200
  13. 465
  14. 2250
  15. 465
  16. 485
  17. 1850
  18. 3350
  19. 1250
  20. 3800
  21. 400
  22. 1850
  23. 950
  24. 75
  25. 700
  26. 850
  27. 275
  28. 3750
  29. 750
  30. 155
  31. 4150
  32. 2700
  33. 210
  34. 135
  35. 130
  36. 4150
  37. 3850
  38. 950
  39. 100
  40. 4750

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