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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 980 · 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. 1.36 × 5 =
  2. 2.64 × 5 =
  3. 3.39 × 5 =
  4. 4.70 × 50 =
  5. 5.98 × 50 =
  6. 6.53 × 50 =
  7. 7.13 × 50 =
  8. 8.27 × 50 =
  9. 9.42 × 5 =
  10. 10.37 × 50 =
  11. 11.55 × 50 =
  12. 12.55 × 50 =
  13. 13.28 × 50 =
  14. 14.77 × 50 =
  15. 15.74 × 50 =
  16. 16.20 × 5 =
  17. 17.54 × 50 =
  18. 18.25 × 50 =
  19. 19.59 × 50 =
  20. 20.27 × 5 =
  21. 21.96 × 50 =
  22. 22.94 × 5 =
  23. 23.40 × 5 =
  24. 24.21 × 5 =
  25. 25.24 × 50 =
  26. 26.74 × 50 =
  27. 27.46 × 5 =
  28. 28.37 × 50 =
  29. 29.69 × 50 =
  30. 30.79 × 50 =
  31. 31.70 × 50 =
  32. 32.46 × 5 =
  33. 33.82 × 50 =
  34. 34.56 × 50 =
  35. 35.87 × 5 =
  36. 36.43 × 5 =
  37. 37.53 × 5 =
  38. 38.72 × 5 =
  39. 39.81 × 50 =
  40. 40.31 × 5 =

Answer key

  1. 180
  2. 320
  3. 195
  4. 3500
  5. 4900
  6. 2650
  7. 650
  8. 1350
  9. 210
  10. 1850
  11. 2750
  12. 2750
  13. 1400
  14. 3850
  15. 3700
  16. 100
  17. 2700
  18. 1250
  19. 2950
  20. 135
  21. 4800
  22. 470
  23. 200
  24. 105
  25. 1200
  26. 3700
  27. 230
  28. 1850
  29. 3450
  30. 3950
  31. 3500
  32. 230
  33. 4100
  34. 2800
  35. 435
  36. 215
  37. 265
  38. 360
  39. 4050
  40. 155

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