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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 831 · 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. 1.73 × 5 =
  2. 2.81 × 5 =
  3. 3.20 × 50 =
  4. 4.73 × 5 =
  5. 5.97 × 50 =
  6. 6.75 × 50 =
  7. 7.72 × 5 =
  8. 8.26 × 5 =
  9. 9.60 × 50 =
  10. 10.13 × 5 =
  11. 11.72 × 50 =
  12. 12.62 × 50 =
  13. 13.20 × 5 =
  14. 14.42 × 50 =
  15. 15.55 × 50 =
  16. 16.77 × 5 =
  17. 17.28 × 50 =
  18. 18.12 × 5 =
  19. 19.91 × 5 =
  20. 20.58 × 50 =
  21. 21.53 × 5 =
  22. 22.83 × 50 =
  23. 23.49 × 5 =
  24. 24.19 × 5 =
  25. 25.47 × 5 =
  26. 26.48 × 50 =
  27. 27.30 × 50 =
  28. 28.71 × 5 =
  29. 29.83 × 50 =
  30. 30.56 × 50 =
  31. 31.79 × 5 =
  32. 32.14 × 50 =
  33. 33.88 × 5 =
  34. 34.81 × 50 =
  35. 35.52 × 5 =
  36. 36.56 × 5 =
  37. 37.93 × 50 =
  38. 38.24 × 5 =
  39. 39.85 × 5 =
  40. 40.54 × 5 =

Answer key

  1. 365
  2. 405
  3. 1000
  4. 365
  5. 4850
  6. 3750
  7. 360
  8. 130
  9. 3000
  10. 65
  11. 3600
  12. 3100
  13. 100
  14. 2100
  15. 2750
  16. 385
  17. 1400
  18. 60
  19. 455
  20. 2900
  21. 265
  22. 4150
  23. 245
  24. 95
  25. 235
  26. 2400
  27. 1500
  28. 355
  29. 4150
  30. 2800
  31. 395
  32. 700
  33. 440
  34. 4050
  35. 260
  36. 280
  37. 4650
  38. 120
  39. 425
  40. 270

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