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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 926 · 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. 1.92 × 5 =
  2. 2.72 × 5 =
  3. 3.47 × 5 =
  4. 4.32 × 50 =
  5. 5.83 × 50 =
  6. 6.96 × 50 =
  7. 7.79 × 5 =
  8. 8.38 × 50 =
  9. 9.18 × 50 =
  10. 10.44 × 50 =
  11. 11.29 × 5 =
  12. 12.25 × 50 =
  13. 13.13 × 5 =
  14. 14.96 × 50 =
  15. 15.70 × 50 =
  16. 16.58 × 5 =
  17. 17.27 × 5 =
  18. 18.53 × 50 =
  19. 19.92 × 50 =
  20. 20.32 × 50 =
  21. 21.90 × 50 =
  22. 22.14 × 50 =
  23. 23.35 × 50 =
  24. 24.27 × 50 =
  25. 25.22 × 50 =
  26. 26.98 × 5 =
  27. 27.70 × 5 =
  28. 28.81 × 5 =
  29. 29.94 × 5 =
  30. 30.67 × 50 =
  31. 31.40 × 50 =
  32. 32.65 × 5 =
  33. 33.42 × 5 =
  34. 34.97 × 5 =
  35. 35.22 × 50 =
  36. 36.77 × 50 =
  37. 37.78 × 50 =
  38. 38.94 × 5 =
  39. 39.79 × 50 =
  40. 40.62 × 50 =

Answer key

  1. 460
  2. 360
  3. 235
  4. 1600
  5. 4150
  6. 4800
  7. 395
  8. 1900
  9. 900
  10. 2200
  11. 145
  12. 1250
  13. 65
  14. 4800
  15. 3500
  16. 290
  17. 135
  18. 2650
  19. 4600
  20. 1600
  21. 4500
  22. 700
  23. 1750
  24. 1350
  25. 1100
  26. 490
  27. 350
  28. 405
  29. 470
  30. 3350
  31. 2000
  32. 325
  33. 210
  34. 485
  35. 1100
  36. 3850
  37. 3900
  38. 470
  39. 3950
  40. 3100

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