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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 64 · 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. 1.23 × 5 =
  2. 2.69 × 5 =
  3. 3.63 × 50 =
  4. 4.32 × 5 =
  5. 5.46 × 5 =
  6. 6.85 × 5 =
  7. 7.17 × 50 =
  8. 8.17 × 5 =
  9. 9.33 × 5 =
  10. 10.35 × 50 =
  11. 11.13 × 50 =
  12. 12.79 × 50 =
  13. 13.78 × 50 =
  14. 14.77 × 5 =
  15. 15.91 × 5 =
  16. 16.53 × 50 =
  17. 17.60 × 5 =
  18. 18.61 × 5 =
  19. 19.49 × 50 =
  20. 20.65 × 50 =
  21. 21.81 × 5 =
  22. 22.71 × 5 =
  23. 23.82 × 5 =
  24. 24.13 × 5 =
  25. 25.79 × 5 =
  26. 26.17 × 50 =
  27. 27.44 × 50 =
  28. 28.46 × 50 =
  29. 29.78 × 5 =
  30. 30.64 × 5 =
  31. 31.71 × 5 =
  32. 32.51 × 5 =
  33. 33.89 × 5 =
  34. 34.76 × 50 =
  35. 35.43 × 50 =
  36. 36.72 × 5 =
  37. 37.24 × 5 =
  38. 38.45 × 5 =
  39. 39.68 × 5 =
  40. 40.72 × 5 =

Answer key

  1. 115
  2. 345
  3. 3150
  4. 160
  5. 230
  6. 425
  7. 850
  8. 85
  9. 165
  10. 1750
  11. 650
  12. 3950
  13. 3900
  14. 385
  15. 455
  16. 2650
  17. 300
  18. 305
  19. 2450
  20. 3250
  21. 405
  22. 355
  23. 410
  24. 65
  25. 395
  26. 850
  27. 2200
  28. 2300
  29. 390
  30. 320
  31. 355
  32. 255
  33. 445
  34. 3800
  35. 2150
  36. 360
  37. 120
  38. 225
  39. 340
  40. 360

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