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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 494 · 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. 1.88 × 5 =
  2. 2.29 × 5 =
  3. 3.83 × 5 =
  4. 4.19 × 5 =
  5. 5.92 × 50 =
  6. 6.26 × 5 =
  7. 7.71 × 5 =
  8. 8.27 × 5 =
  9. 9.58 × 5 =
  10. 10.94 × 50 =
  11. 11.71 × 5 =
  12. 12.77 × 5 =
  13. 13.46 × 50 =
  14. 14.20 × 5 =
  15. 15.13 × 5 =
  16. 16.15 × 50 =
  17. 17.93 × 5 =
  18. 18.50 × 5 =
  19. 19.72 × 5 =
  20. 20.62 × 50 =
  21. 21.81 × 5 =
  22. 22.34 × 50 =
  23. 23.98 × 50 =
  24. 24.22 × 5 =
  25. 25.38 × 50 =
  26. 26.32 × 50 =
  27. 27.73 × 5 =
  28. 28.36 × 5 =
  29. 29.52 × 5 =
  30. 30.90 × 5 =
  31. 31.28 × 5 =
  32. 32.31 × 5 =
  33. 33.65 × 50 =
  34. 34.82 × 50 =
  35. 35.66 × 5 =
  36. 36.50 × 5 =
  37. 37.86 × 5 =
  38. 38.28 × 50 =
  39. 39.56 × 50 =
  40. 40.77 × 5 =

Answer key

  1. 440
  2. 145
  3. 415
  4. 95
  5. 4600
  6. 130
  7. 355
  8. 135
  9. 290
  10. 4700
  11. 355
  12. 385
  13. 2300
  14. 100
  15. 65
  16. 750
  17. 465
  18. 250
  19. 360
  20. 3100
  21. 405
  22. 1700
  23. 4900
  24. 110
  25. 1900
  26. 1600
  27. 365
  28. 180
  29. 260
  30. 450
  31. 140
  32. 155
  33. 3250
  34. 4100
  35. 330
  36. 250
  37. 430
  38. 1400
  39. 2800
  40. 385

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