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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 56 · 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. 1.81 × 50 =
  2. 2.13 × 5 =
  3. 3.92 × 50 =
  4. 4.51 × 5 =
  5. 5.32 × 5 =
  6. 6.36 × 50 =
  7. 7.23 × 5 =
  8. 8.72 × 5 =
  9. 9.67 × 5 =
  10. 10.50 × 50 =
  11. 11.53 × 5 =
  12. 12.61 × 5 =
  13. 13.87 × 5 =
  14. 14.25 × 50 =
  15. 15.70 × 5 =
  16. 16.54 × 50 =
  17. 17.27 × 50 =
  18. 18.29 × 50 =
  19. 19.81 × 50 =
  20. 20.48 × 50 =
  21. 21.36 × 5 =
  22. 22.14 × 5 =
  23. 23.54 × 5 =
  24. 24.45 × 50 =
  25. 25.42 × 5 =
  26. 26.18 × 5 =
  27. 27.71 × 50 =
  28. 28.34 × 5 =
  29. 29.65 × 50 =
  30. 30.50 × 5 =
  31. 31.98 × 50 =
  32. 32.19 × 5 =
  33. 33.76 × 50 =
  34. 34.75 × 50 =
  35. 35.85 × 50 =
  36. 36.75 × 5 =
  37. 37.50 × 50 =
  38. 38.83 × 5 =
  39. 39.17 × 5 =
  40. 40.53 × 50 =

Answer key

  1. 4050
  2. 65
  3. 4600
  4. 255
  5. 160
  6. 1800
  7. 115
  8. 360
  9. 335
  10. 2500
  11. 265
  12. 305
  13. 435
  14. 1250
  15. 350
  16. 2700
  17. 1350
  18. 1450
  19. 4050
  20. 2400
  21. 180
  22. 70
  23. 270
  24. 2250
  25. 210
  26. 90
  27. 3550
  28. 170
  29. 3250
  30. 250
  31. 4900
  32. 95
  33. 3800
  34. 3750
  35. 4250
  36. 375
  37. 2500
  38. 415
  39. 85
  40. 2650

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