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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 675 · 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. 1.13 × 5 =
  2. 2.93 × 5 =
  3. 3.25 × 5 =
  4. 4.24 × 5 =
  5. 5.24 × 50 =
  6. 6.86 × 5 =
  7. 7.13 × 50 =
  8. 8.15 × 5 =
  9. 9.77 × 5 =
  10. 10.72 × 5 =
  11. 11.26 × 50 =
  12. 12.81 × 50 =
  13. 13.71 × 50 =
  14. 14.76 × 50 =
  15. 15.45 × 5 =
  16. 16.57 × 5 =
  17. 17.70 × 50 =
  18. 18.85 × 5 =
  19. 19.54 × 50 =
  20. 20.88 × 5 =
  21. 21.65 × 50 =
  22. 22.40 × 50 =
  23. 23.97 × 5 =
  24. 24.26 × 50 =
  25. 25.70 × 5 =
  26. 26.64 × 50 =
  27. 27.83 × 50 =
  28. 28.14 × 50 =
  29. 29.93 × 5 =
  30. 30.70 × 5 =
  31. 31.64 × 5 =
  32. 32.51 × 50 =
  33. 33.25 × 50 =
  34. 34.49 × 5 =
  35. 35.94 × 50 =
  36. 36.47 × 5 =
  37. 37.61 × 50 =
  38. 38.30 × 50 =
  39. 39.84 × 50 =
  40. 40.79 × 50 =

Answer key

  1. 65
  2. 465
  3. 125
  4. 120
  5. 1200
  6. 430
  7. 650
  8. 75
  9. 385
  10. 360
  11. 1300
  12. 4050
  13. 3550
  14. 3800
  15. 225
  16. 285
  17. 3500
  18. 425
  19. 2700
  20. 440
  21. 3250
  22. 2000
  23. 485
  24. 1300
  25. 350
  26. 3200
  27. 4150
  28. 700
  29. 465
  30. 350
  31. 320
  32. 2550
  33. 1250
  34. 245
  35. 4700
  36. 235
  37. 3050
  38. 1500
  39. 4200
  40. 3950

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