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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 820 · 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. 1.48 × 50 =
  2. 2.21 × 5 =
  3. 3.21 × 50 =
  4. 4.13 × 5 =
  5. 5.97 × 50 =
  6. 6.40 × 5 =
  7. 7.31 × 5 =
  8. 8.45 × 5 =
  9. 9.55 × 50 =
  10. 10.50 × 5 =
  11. 11.54 × 5 =
  12. 12.76 × 5 =
  13. 13.20 × 5 =
  14. 14.45 × 50 =
  15. 15.27 × 5 =
  16. 16.46 × 50 =
  17. 17.23 × 50 =
  18. 18.71 × 50 =
  19. 19.97 × 5 =
  20. 20.38 × 5 =
  21. 21.42 × 50 =
  22. 22.56 × 5 =
  23. 23.76 × 50 =
  24. 24.62 × 50 =
  25. 25.66 × 50 =
  26. 26.62 × 5 =
  27. 27.73 × 5 =
  28. 28.45 × 5 =
  29. 29.22 × 50 =
  30. 30.78 × 5 =
  31. 31.28 × 5 =
  32. 32.35 × 50 =
  33. 33.40 × 50 =
  34. 34.69 × 50 =
  35. 35.25 × 50 =
  36. 36.71 × 50 =
  37. 37.28 × 5 =
  38. 38.47 × 50 =
  39. 39.12 × 5 =
  40. 40.35 × 5 =

Answer key

  1. 2400
  2. 105
  3. 1050
  4. 65
  5. 4850
  6. 200
  7. 155
  8. 225
  9. 2750
  10. 250
  11. 270
  12. 380
  13. 100
  14. 2250
  15. 135
  16. 2300
  17. 1150
  18. 3550
  19. 485
  20. 190
  21. 2100
  22. 280
  23. 3800
  24. 3100
  25. 3300
  26. 310
  27. 365
  28. 225
  29. 1100
  30. 390
  31. 140
  32. 1750
  33. 2000
  34. 3450
  35. 1250
  36. 3550
  37. 140
  38. 2350
  39. 60
  40. 175

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