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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 701 · 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. 1.72 × 50 =
  2. 2.55 × 5 =
  3. 3.49 × 5 =
  4. 4.52 × 5 =
  5. 5.22 × 5 =
  6. 6.38 × 5 =
  7. 7.16 × 5 =
  8. 8.83 × 5 =
  9. 9.96 × 50 =
  10. 10.15 × 50 =
  11. 11.65 × 5 =
  12. 12.24 × 5 =
  13. 13.28 × 5 =
  14. 14.37 × 5 =
  15. 15.98 × 5 =
  16. 16.19 × 5 =
  17. 17.95 × 5 =
  18. 18.47 × 50 =
  19. 19.81 × 5 =
  20. 20.87 × 50 =
  21. 21.71 × 5 =
  22. 22.13 × 5 =
  23. 23.67 × 5 =
  24. 24.53 × 5 =
  25. 25.45 × 50 =
  26. 26.69 × 5 =
  27. 27.92 × 5 =
  28. 28.95 × 5 =
  29. 29.12 × 5 =
  30. 30.83 × 5 =
  31. 31.20 × 5 =
  32. 32.23 × 50 =
  33. 33.23 × 5 =
  34. 34.15 × 50 =
  35. 35.82 × 50 =
  36. 36.67 × 5 =
  37. 37.30 × 50 =
  38. 38.32 × 50 =
  39. 39.90 × 50 =
  40. 40.90 × 5 =

Answer key

  1. 3600
  2. 275
  3. 245
  4. 260
  5. 110
  6. 190
  7. 80
  8. 415
  9. 4800
  10. 750
  11. 325
  12. 120
  13. 140
  14. 185
  15. 490
  16. 95
  17. 475
  18. 2350
  19. 405
  20. 4350
  21. 355
  22. 65
  23. 335
  24. 265
  25. 2250
  26. 345
  27. 460
  28. 475
  29. 60
  30. 415
  31. 100
  32. 1150
  33. 115
  34. 750
  35. 4100
  36. 335
  37. 1500
  38. 1600
  39. 4500
  40. 450

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