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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 854 · 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. 1.27 × 50 =
  2. 2.18 × 5 =
  3. 3.93 × 50 =
  4. 4.95 × 5 =
  5. 5.23 × 5 =
  6. 6.66 × 50 =
  7. 7.26 × 5 =
  8. 8.25 × 5 =
  9. 9.86 × 50 =
  10. 10.27 × 5 =
  11. 11.36 × 50 =
  12. 12.29 × 5 =
  13. 13.85 × 5 =
  14. 14.69 × 50 =
  15. 15.66 × 50 =
  16. 16.88 × 5 =
  17. 17.80 × 5 =
  18. 18.24 × 50 =
  19. 19.48 × 50 =
  20. 20.65 × 50 =
  21. 21.20 × 5 =
  22. 22.82 × 50 =
  23. 23.96 × 5 =
  24. 24.63 × 50 =
  25. 25.87 × 50 =
  26. 26.59 × 5 =
  27. 27.42 × 5 =
  28. 28.69 × 5 =
  29. 29.49 × 5 =
  30. 30.23 × 5 =
  31. 31.60 × 5 =
  32. 32.67 × 5 =
  33. 33.84 × 5 =
  34. 34.82 × 50 =
  35. 35.72 × 50 =
  36. 36.55 × 5 =
  37. 37.76 × 5 =
  38. 38.39 × 50 =
  39. 39.54 × 50 =
  40. 40.27 × 5 =

Answer key

  1. 1350
  2. 90
  3. 4650
  4. 475
  5. 115
  6. 3300
  7. 130
  8. 125
  9. 4300
  10. 135
  11. 1800
  12. 145
  13. 425
  14. 3450
  15. 3300
  16. 440
  17. 400
  18. 1200
  19. 2400
  20. 3250
  21. 100
  22. 4100
  23. 480
  24. 3150
  25. 4350
  26. 295
  27. 210
  28. 345
  29. 245
  30. 115
  31. 300
  32. 335
  33. 420
  34. 4100
  35. 3600
  36. 275
  37. 380
  38. 1950
  39. 2700
  40. 135

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