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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 873 · 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. 1.32 × 5 =
  2. 2.57 × 50 =
  3. 3.53 × 50 =
  4. 4.74 × 5 =
  5. 5.91 × 50 =
  6. 6.35 × 50 =
  7. 7.85 × 5 =
  8. 8.51 × 50 =
  9. 9.27 × 5 =
  10. 10.57 × 5 =
  11. 11.85 × 5 =
  12. 12.93 × 50 =
  13. 13.23 × 5 =
  14. 14.57 × 50 =
  15. 15.65 × 5 =
  16. 16.17 × 50 =
  17. 17.43 × 50 =
  18. 18.78 × 5 =
  19. 19.90 × 50 =
  20. 20.84 × 5 =
  21. 21.72 × 5 =
  22. 22.41 × 5 =
  23. 23.89 × 50 =
  24. 24.28 × 50 =
  25. 25.75 × 50 =
  26. 26.70 × 5 =
  27. 27.26 × 5 =
  28. 28.41 × 50 =
  29. 29.85 × 5 =
  30. 30.12 × 5 =
  31. 31.52 × 5 =
  32. 32.13 × 5 =
  33. 33.57 × 5 =
  34. 34.24 × 50 =
  35. 35.67 × 5 =
  36. 36.81 × 5 =
  37. 37.24 × 5 =
  38. 38.85 × 5 =
  39. 39.12 × 50 =
  40. 40.83 × 50 =

Answer key

  1. 160
  2. 2850
  3. 2650
  4. 370
  5. 4550
  6. 1750
  7. 425
  8. 2550
  9. 135
  10. 285
  11. 425
  12. 4650
  13. 115
  14. 2850
  15. 325
  16. 850
  17. 2150
  18. 390
  19. 4500
  20. 420
  21. 360
  22. 205
  23. 4450
  24. 1400
  25. 3750
  26. 350
  27. 130
  28. 2050
  29. 425
  30. 60
  31. 260
  32. 65
  33. 285
  34. 1200
  35. 335
  36. 405
  37. 120
  38. 425
  39. 600
  40. 4150

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