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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 735 · 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. 1.39 × 50 =
  2. 2.87 × 5 =
  3. 3.59 × 5 =
  4. 4.90 × 50 =
  5. 5.88 × 50 =
  6. 6.94 × 5 =
  7. 7.81 × 50 =
  8. 8.76 × 5 =
  9. 9.16 × 50 =
  10. 10.93 × 5 =
  11. 11.13 × 5 =
  12. 12.77 × 50 =
  13. 13.53 × 50 =
  14. 14.44 × 5 =
  15. 15.49 × 50 =
  16. 16.74 × 50 =
  17. 17.12 × 5 =
  18. 18.86 × 5 =
  19. 19.83 × 5 =
  20. 20.86 × 5 =
  21. 21.83 × 5 =
  22. 22.96 × 5 =
  23. 23.83 × 50 =
  24. 24.72 × 50 =
  25. 25.18 × 5 =
  26. 26.30 × 5 =
  27. 27.94 × 5 =
  28. 28.54 × 5 =
  29. 29.87 × 5 =
  30. 30.48 × 5 =
  31. 31.35 × 5 =
  32. 32.55 × 50 =
  33. 33.60 × 5 =
  34. 34.14 × 5 =
  35. 35.87 × 5 =
  36. 36.56 × 50 =
  37. 37.55 × 5 =
  38. 38.38 × 5 =
  39. 39.52 × 5 =
  40. 40.52 × 50 =

Answer key

  1. 1950
  2. 435
  3. 295
  4. 4500
  5. 4400
  6. 470
  7. 4050
  8. 380
  9. 800
  10. 465
  11. 65
  12. 3850
  13. 2650
  14. 220
  15. 2450
  16. 3700
  17. 60
  18. 430
  19. 415
  20. 430
  21. 415
  22. 480
  23. 4150
  24. 3600
  25. 90
  26. 150
  27. 470
  28. 270
  29. 435
  30. 240
  31. 175
  32. 2750
  33. 300
  34. 70
  35. 435
  36. 2800
  37. 275
  38. 190
  39. 260
  40. 2600

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