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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 256 · 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 × 50 =
  2. 2.51 × 50 =
  3. 3.40 × 5 =
  4. 4.59 × 50 =
  5. 5.83 × 5 =
  6. 6.84 × 5 =
  7. 7.47 × 50 =
  8. 8.97 × 50 =
  9. 9.13 × 5 =
  10. 10.23 × 5 =
  11. 11.15 × 5 =
  12. 12.41 × 50 =
  13. 13.30 × 50 =
  14. 14.78 × 5 =
  15. 15.73 × 50 =
  16. 16.13 × 50 =
  17. 17.15 × 50 =
  18. 18.41 × 50 =
  19. 19.33 × 5 =
  20. 20.82 × 50 =
  21. 21.81 × 50 =
  22. 22.97 × 50 =
  23. 23.73 × 5 =
  24. 24.89 × 50 =
  25. 25.23 × 50 =
  26. 26.89 × 5 =
  27. 27.79 × 5 =
  28. 28.61 × 5 =
  29. 29.52 × 50 =
  30. 30.24 × 50 =
  31. 31.48 × 50 =
  32. 32.92 × 50 =
  33. 33.22 × 5 =
  34. 34.54 × 50 =
  35. 35.33 × 5 =
  36. 36.24 × 5 =
  37. 37.24 × 5 =
  38. 38.24 × 5 =
  39. 39.26 × 5 =
  40. 40.83 × 50 =

Answer key

  1. 650
  2. 2550
  3. 200
  4. 2950
  5. 415
  6. 420
  7. 2350
  8. 4850
  9. 65
  10. 115
  11. 75
  12. 2050
  13. 1500
  14. 390
  15. 3650
  16. 650
  17. 750
  18. 2050
  19. 165
  20. 4100
  21. 4050
  22. 4850
  23. 365
  24. 4450
  25. 1150
  26. 445
  27. 395
  28. 305
  29. 2600
  30. 1200
  31. 2400
  32. 4600
  33. 110
  34. 2700
  35. 165
  36. 120
  37. 120
  38. 120
  39. 130
  40. 4150

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