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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 232 · 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. 1.76 × 50 =
  2. 2.16 × 50 =
  3. 3.57 × 50 =
  4. 4.13 × 5 =
  5. 5.72 × 5 =
  6. 6.33 × 5 =
  7. 7.96 × 50 =
  8. 8.97 × 50 =
  9. 9.98 × 5 =
  10. 10.39 × 5 =
  11. 11.32 × 50 =
  12. 12.29 × 5 =
  13. 13.18 × 5 =
  14. 14.94 × 50 =
  15. 15.60 × 5 =
  16. 16.46 × 5 =
  17. 17.53 × 5 =
  18. 18.93 × 50 =
  19. 19.49 × 5 =
  20. 20.69 × 5 =
  21. 21.70 × 50 =
  22. 22.35 × 5 =
  23. 23.80 × 5 =
  24. 24.36 × 5 =
  25. 25.44 × 5 =
  26. 26.35 × 5 =
  27. 27.66 × 5 =
  28. 28.22 × 5 =
  29. 29.89 × 50 =
  30. 30.59 × 5 =
  31. 31.85 × 50 =
  32. 32.33 × 50 =
  33. 33.17 × 50 =
  34. 34.90 × 50 =
  35. 35.14 × 50 =
  36. 36.38 × 5 =
  37. 37.32 × 5 =
  38. 38.57 × 5 =
  39. 39.16 × 50 =
  40. 40.30 × 5 =

Answer key

  1. 3800
  2. 800
  3. 2850
  4. 65
  5. 360
  6. 165
  7. 4800
  8. 4850
  9. 490
  10. 195
  11. 1600
  12. 145
  13. 90
  14. 4700
  15. 300
  16. 230
  17. 265
  18. 4650
  19. 245
  20. 345
  21. 3500
  22. 175
  23. 400
  24. 180
  25. 220
  26. 175
  27. 330
  28. 110
  29. 4450
  30. 295
  31. 4250
  32. 1650
  33. 850
  34. 4500
  35. 700
  36. 190
  37. 160
  38. 285
  39. 800
  40. 150

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