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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 420 · 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. 1.92 × 50 =
  2. 2.39 × 5 =
  3. 3.38 × 50 =
  4. 4.27 × 50 =
  5. 5.36 × 5 =
  6. 6.24 × 5 =
  7. 7.73 × 50 =
  8. 8.37 × 50 =
  9. 9.16 × 50 =
  10. 10.50 × 50 =
  11. 11.61 × 5 =
  12. 12.16 × 5 =
  13. 13.81 × 5 =
  14. 14.50 × 50 =
  15. 15.30 × 5 =
  16. 16.21 × 50 =
  17. 17.52 × 5 =
  18. 18.36 × 5 =
  19. 19.13 × 50 =
  20. 20.66 × 50 =
  21. 21.54 × 5 =
  22. 22.73 × 50 =
  23. 23.55 × 5 =
  24. 24.98 × 50 =
  25. 25.89 × 50 =
  26. 26.43 × 5 =
  27. 27.59 × 5 =
  28. 28.58 × 5 =
  29. 29.74 × 50 =
  30. 30.83 × 50 =
  31. 31.36 × 5 =
  32. 32.87 × 50 =
  33. 33.53 × 5 =
  34. 34.68 × 50 =
  35. 35.69 × 5 =
  36. 36.28 × 50 =
  37. 37.52 × 50 =
  38. 38.88 × 50 =
  39. 39.80 × 5 =
  40. 40.63 × 5 =

Answer key

  1. 4600
  2. 195
  3. 1900
  4. 1350
  5. 180
  6. 120
  7. 3650
  8. 1850
  9. 800
  10. 2500
  11. 305
  12. 80
  13. 405
  14. 2500
  15. 150
  16. 1050
  17. 260
  18. 180
  19. 650
  20. 3300
  21. 270
  22. 3650
  23. 275
  24. 4900
  25. 4450
  26. 215
  27. 295
  28. 290
  29. 3700
  30. 4150
  31. 180
  32. 4350
  33. 265
  34. 3400
  35. 345
  36. 1400
  37. 2600
  38. 4400
  39. 400
  40. 315

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