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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 364 · 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. 1.62 × 50 =
  2. 2.26 × 50 =
  3. 3.94 × 50 =
  4. 4.37 × 50 =
  5. 5.66 × 5 =
  6. 6.98 × 50 =
  7. 7.18 × 5 =
  8. 8.21 × 50 =
  9. 9.65 × 50 =
  10. 10.69 × 5 =
  11. 11.29 × 5 =
  12. 12.95 × 5 =
  13. 13.71 × 5 =
  14. 14.17 × 50 =
  15. 15.35 × 50 =
  16. 16.52 × 50 =
  17. 17.25 × 50 =
  18. 18.76 × 5 =
  19. 19.16 × 5 =
  20. 20.75 × 50 =
  21. 21.55 × 5 =
  22. 22.15 × 5 =
  23. 23.26 × 5 =
  24. 24.56 × 5 =
  25. 25.39 × 50 =
  26. 26.30 × 50 =
  27. 27.64 × 50 =
  28. 28.53 × 5 =
  29. 29.48 × 50 =
  30. 30.21 × 5 =
  31. 31.73 × 50 =
  32. 32.26 × 5 =
  33. 33.33 × 5 =
  34. 34.65 × 5 =
  35. 35.13 × 5 =
  36. 36.30 × 5 =
  37. 37.83 × 5 =
  38. 38.94 × 5 =
  39. 39.64 × 50 =
  40. 40.67 × 5 =

Answer key

  1. 3100
  2. 1300
  3. 4700
  4. 1850
  5. 330
  6. 4900
  7. 90
  8. 1050
  9. 3250
  10. 345
  11. 145
  12. 475
  13. 355
  14. 850
  15. 1750
  16. 2600
  17. 1250
  18. 380
  19. 80
  20. 3750
  21. 275
  22. 75
  23. 130
  24. 280
  25. 1950
  26. 1500
  27. 3200
  28. 265
  29. 2400
  30. 105
  31. 3650
  32. 130
  33. 165
  34. 325
  35. 65
  36. 150
  37. 415
  38. 470
  39. 3200
  40. 335

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