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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 864 · 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. 1.24 × 5 =
  2. 2.19 × 50 =
  3. 3.22 × 50 =
  4. 4.98 × 50 =
  5. 5.83 × 50 =
  6. 6.82 × 50 =
  7. 7.55 × 50 =
  8. 8.50 × 5 =
  9. 9.48 × 50 =
  10. 10.37 × 50 =
  11. 11.89 × 5 =
  12. 12.36 × 5 =
  13. 13.69 × 5 =
  14. 14.21 × 5 =
  15. 15.30 × 50 =
  16. 16.25 × 50 =
  17. 17.98 × 50 =
  18. 18.50 × 50 =
  19. 19.55 × 50 =
  20. 20.55 × 5 =
  21. 21.38 × 5 =
  22. 22.71 × 5 =
  23. 23.12 × 5 =
  24. 24.91 × 50 =
  25. 25.45 × 50 =
  26. 26.71 × 50 =
  27. 27.45 × 50 =
  28. 28.29 × 5 =
  29. 29.35 × 5 =
  30. 30.40 × 5 =
  31. 31.82 × 5 =
  32. 32.39 × 5 =
  33. 33.97 × 50 =
  34. 34.55 × 5 =
  35. 35.63 × 5 =
  36. 36.54 × 50 =
  37. 37.17 × 50 =
  38. 38.48 × 5 =
  39. 39.23 × 50 =
  40. 40.13 × 5 =

Answer key

  1. 120
  2. 950
  3. 1100
  4. 4900
  5. 4150
  6. 4100
  7. 2750
  8. 250
  9. 2400
  10. 1850
  11. 445
  12. 180
  13. 345
  14. 105
  15. 1500
  16. 1250
  17. 4900
  18. 2500
  19. 2750
  20. 275
  21. 190
  22. 355
  23. 60
  24. 4550
  25. 2250
  26. 3550
  27. 2250
  28. 145
  29. 175
  30. 200
  31. 410
  32. 195
  33. 4850
  34. 275
  35. 315
  36. 2700
  37. 850
  38. 240
  39. 1150
  40. 65

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