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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 951 · 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. 1.69 × 5 =
  2. 2.20 × 50 =
  3. 3.96 × 50 =
  4. 4.71 × 5 =
  5. 5.14 × 5 =
  6. 6.20 × 50 =
  7. 7.96 × 5 =
  8. 8.12 × 50 =
  9. 9.85 × 5 =
  10. 10.87 × 50 =
  11. 11.35 × 50 =
  12. 12.78 × 50 =
  13. 13.80 × 5 =
  14. 14.32 × 50 =
  15. 15.34 × 5 =
  16. 16.52 × 5 =
  17. 17.49 × 5 =
  18. 18.25 × 50 =
  19. 19.12 × 50 =
  20. 20.62 × 50 =
  21. 21.39 × 5 =
  22. 22.62 × 50 =
  23. 23.12 × 50 =
  24. 24.17 × 50 =
  25. 25.27 × 50 =
  26. 26.88 × 5 =
  27. 27.96 × 50 =
  28. 28.47 × 50 =
  29. 29.66 × 50 =
  30. 30.29 × 5 =
  31. 31.59 × 50 =
  32. 32.85 × 5 =
  33. 33.53 × 50 =
  34. 34.44 × 5 =
  35. 35.27 × 50 =
  36. 36.89 × 5 =
  37. 37.53 × 50 =
  38. 38.40 × 5 =
  39. 39.21 × 50 =
  40. 40.34 × 5 =

Answer key

  1. 345
  2. 1000
  3. 4800
  4. 355
  5. 70
  6. 1000
  7. 480
  8. 600
  9. 425
  10. 4350
  11. 1750
  12. 3900
  13. 400
  14. 1600
  15. 170
  16. 260
  17. 245
  18. 1250
  19. 600
  20. 3100
  21. 195
  22. 3100
  23. 600
  24. 850
  25. 1350
  26. 440
  27. 4800
  28. 2350
  29. 3300
  30. 145
  31. 2950
  32. 425
  33. 2650
  34. 220
  35. 1350
  36. 445
  37. 2650
  38. 200
  39. 1050
  40. 170

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