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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 544 · 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. 1.33 × 5 =
  2. 2.67 × 50 =
  3. 3.52 × 5 =
  4. 4.82 × 50 =
  5. 5.53 × 50 =
  6. 6.40 × 5 =
  7. 7.36 × 5 =
  8. 8.53 × 50 =
  9. 9.70 × 50 =
  10. 10.39 × 5 =
  11. 11.17 × 50 =
  12. 12.34 × 5 =
  13. 13.59 × 5 =
  14. 14.34 × 50 =
  15. 15.47 × 5 =
  16. 16.86 × 50 =
  17. 17.83 × 5 =
  18. 18.34 × 5 =
  19. 19.22 × 5 =
  20. 20.84 × 50 =
  21. 21.46 × 50 =
  22. 22.92 × 5 =
  23. 23.56 × 5 =
  24. 24.72 × 50 =
  25. 25.44 × 50 =
  26. 26.15 × 5 =
  27. 27.45 × 50 =
  28. 28.42 × 5 =
  29. 29.14 × 5 =
  30. 30.77 × 50 =
  31. 31.88 × 50 =
  32. 32.56 × 5 =
  33. 33.16 × 5 =
  34. 34.52 × 50 =
  35. 35.44 × 5 =
  36. 36.72 × 5 =
  37. 37.49 × 50 =
  38. 38.79 × 5 =
  39. 39.43 × 5 =
  40. 40.41 × 50 =

Answer key

  1. 165
  2. 3350
  3. 260
  4. 4100
  5. 2650
  6. 200
  7. 180
  8. 2650
  9. 3500
  10. 195
  11. 850
  12. 170
  13. 295
  14. 1700
  15. 235
  16. 4300
  17. 415
  18. 170
  19. 110
  20. 4200
  21. 2300
  22. 460
  23. 280
  24. 3600
  25. 2200
  26. 75
  27. 2250
  28. 210
  29. 70
  30. 3850
  31. 4400
  32. 280
  33. 80
  34. 2600
  35. 220
  36. 360
  37. 2450
  38. 395
  39. 215
  40. 2050

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