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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 658 · 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. 1.46 × 5 =
  2. 2.42 × 50 =
  3. 3.36 × 50 =
  4. 4.56 × 5 =
  5. 5.73 × 5 =
  6. 6.83 × 5 =
  7. 7.72 × 50 =
  8. 8.18 × 5 =
  9. 9.84 × 5 =
  10. 10.39 × 50 =
  11. 11.14 × 50 =
  12. 12.61 × 5 =
  13. 13.34 × 50 =
  14. 14.19 × 50 =
  15. 15.27 × 50 =
  16. 16.19 × 5 =
  17. 17.68 × 5 =
  18. 18.63 × 5 =
  19. 19.95 × 5 =
  20. 20.25 × 5 =
  21. 21.96 × 5 =
  22. 22.39 × 50 =
  23. 23.19 × 50 =
  24. 24.73 × 50 =
  25. 25.98 × 5 =
  26. 26.86 × 5 =
  27. 27.55 × 50 =
  28. 28.40 × 5 =
  29. 29.81 × 50 =
  30. 30.22 × 50 =
  31. 31.45 × 5 =
  32. 32.91 × 50 =
  33. 33.50 × 50 =
  34. 34.62 × 50 =
  35. 35.45 × 50 =
  36. 36.18 × 5 =
  37. 37.38 × 50 =
  38. 38.72 × 5 =
  39. 39.69 × 50 =
  40. 40.81 × 5 =

Answer key

  1. 230
  2. 2100
  3. 1800
  4. 280
  5. 365
  6. 415
  7. 3600
  8. 90
  9. 420
  10. 1950
  11. 700
  12. 305
  13. 1700
  14. 950
  15. 1350
  16. 95
  17. 340
  18. 315
  19. 475
  20. 125
  21. 480
  22. 1950
  23. 950
  24. 3650
  25. 490
  26. 430
  27. 2750
  28. 200
  29. 4050
  30. 1100
  31. 225
  32. 4550
  33. 2500
  34. 3100
  35. 2250
  36. 90
  37. 1900
  38. 360
  39. 3450
  40. 405

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