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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 835 · 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. 1.55 × 5 =
  2. 2.22 × 5 =
  3. 3.83 × 5 =
  4. 4.90 × 50 =
  5. 5.69 × 5 =
  6. 6.27 × 5 =
  7. 7.13 × 50 =
  8. 8.56 × 5 =
  9. 9.25 × 5 =
  10. 10.39 × 50 =
  11. 11.79 × 50 =
  12. 12.77 × 5 =
  13. 13.98 × 50 =
  14. 14.17 × 5 =
  15. 15.88 × 50 =
  16. 16.67 × 5 =
  17. 17.30 × 5 =
  18. 18.88 × 5 =
  19. 19.93 × 50 =
  20. 20.88 × 5 =
  21. 21.54 × 50 =
  22. 22.31 × 50 =
  23. 23.50 × 50 =
  24. 24.36 × 5 =
  25. 25.58 × 5 =
  26. 26.31 × 50 =
  27. 27.18 × 5 =
  28. 28.52 × 5 =
  29. 29.58 × 5 =
  30. 30.28 × 50 =
  31. 31.24 × 50 =
  32. 32.15 × 5 =
  33. 33.79 × 50 =
  34. 34.38 × 50 =
  35. 35.43 × 5 =
  36. 36.27 × 5 =
  37. 37.72 × 5 =
  38. 38.64 × 50 =
  39. 39.95 × 50 =
  40. 40.73 × 50 =

Answer key

  1. 275
  2. 110
  3. 415
  4. 4500
  5. 345
  6. 135
  7. 650
  8. 280
  9. 125
  10. 1950
  11. 3950
  12. 385
  13. 4900
  14. 85
  15. 4400
  16. 335
  17. 150
  18. 440
  19. 4650
  20. 440
  21. 2700
  22. 1550
  23. 2500
  24. 180
  25. 290
  26. 1550
  27. 90
  28. 260
  29. 290
  30. 1400
  31. 1200
  32. 75
  33. 3950
  34. 1900
  35. 215
  36. 135
  37. 360
  38. 3200
  39. 4750
  40. 3650

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