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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 855 · 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. 1.66 × 5 =
  2. 2.38 × 50 =
  3. 3.88 × 50 =
  4. 4.12 × 50 =
  5. 5.33 × 50 =
  6. 6.15 × 5 =
  7. 7.20 × 5 =
  8. 8.19 × 5 =
  9. 9.23 × 5 =
  10. 10.78 × 5 =
  11. 11.64 × 50 =
  12. 12.29 × 5 =
  13. 13.56 × 5 =
  14. 14.64 × 50 =
  15. 15.73 × 5 =
  16. 16.13 × 50 =
  17. 17.75 × 50 =
  18. 18.50 × 5 =
  19. 19.22 × 50 =
  20. 20.15 × 5 =
  21. 21.32 × 5 =
  22. 22.77 × 5 =
  23. 23.95 × 5 =
  24. 24.89 × 5 =
  25. 25.53 × 5 =
  26. 26.47 × 5 =
  27. 27.66 × 50 =
  28. 28.22 × 5 =
  29. 29.91 × 5 =
  30. 30.74 × 5 =
  31. 31.62 × 5 =
  32. 32.47 × 5 =
  33. 33.60 × 5 =
  34. 34.16 × 5 =
  35. 35.42 × 50 =
  36. 36.55 × 5 =
  37. 37.38 × 50 =
  38. 38.45 × 50 =
  39. 39.32 × 50 =
  40. 40.26 × 5 =

Answer key

  1. 330
  2. 1900
  3. 4400
  4. 600
  5. 1650
  6. 75
  7. 100
  8. 95
  9. 115
  10. 390
  11. 3200
  12. 145
  13. 280
  14. 3200
  15. 365
  16. 650
  17. 3750
  18. 250
  19. 1100
  20. 75
  21. 160
  22. 385
  23. 475
  24. 445
  25. 265
  26. 235
  27. 3300
  28. 110
  29. 455
  30. 370
  31. 310
  32. 235
  33. 300
  34. 80
  35. 2100
  36. 275
  37. 1900
  38. 2250
  39. 1600
  40. 130

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