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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 733 · 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. 1.97 × 50 =
  2. 2.68 × 50 =
  3. 3.51 × 5 =
  4. 4.72 × 5 =
  5. 5.67 × 5 =
  6. 6.91 × 5 =
  7. 7.92 × 50 =
  8. 8.97 × 5 =
  9. 9.39 × 5 =
  10. 10.13 × 5 =
  11. 11.60 × 50 =
  12. 12.69 × 50 =
  13. 13.38 × 50 =
  14. 14.95 × 5 =
  15. 15.38 × 5 =
  16. 16.57 × 50 =
  17. 17.83 × 50 =
  18. 18.82 × 5 =
  19. 19.81 × 5 =
  20. 20.73 × 5 =
  21. 21.72 × 5 =
  22. 22.27 × 5 =
  23. 23.35 × 50 =
  24. 24.71 × 5 =
  25. 25.87 × 5 =
  26. 26.88 × 50 =
  27. 27.26 × 50 =
  28. 28.66 × 5 =
  29. 29.77 × 5 =
  30. 30.61 × 50 =
  31. 31.57 × 50 =
  32. 32.86 × 5 =
  33. 33.67 × 50 =
  34. 34.59 × 50 =
  35. 35.29 × 5 =
  36. 36.44 × 5 =
  37. 37.54 × 5 =
  38. 38.61 × 5 =
  39. 39.14 × 50 =
  40. 40.14 × 5 =

Answer key

  1. 4850
  2. 3400
  3. 255
  4. 360
  5. 335
  6. 455
  7. 4600
  8. 485
  9. 195
  10. 65
  11. 3000
  12. 3450
  13. 1900
  14. 475
  15. 190
  16. 2850
  17. 4150
  18. 410
  19. 405
  20. 365
  21. 360
  22. 135
  23. 1750
  24. 355
  25. 435
  26. 4400
  27. 1300
  28. 330
  29. 385
  30. 3050
  31. 2850
  32. 430
  33. 3350
  34. 2950
  35. 145
  36. 220
  37. 270
  38. 305
  39. 700
  40. 70

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