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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 134 · 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. 1.91 × 5 =
  2. 2.19 × 5 =
  3. 3.69 × 50 =
  4. 4.18 × 5 =
  5. 5.53 × 5 =
  6. 6.15 × 5 =
  7. 7.47 × 50 =
  8. 8.34 × 50 =
  9. 9.32 × 50 =
  10. 10.38 × 5 =
  11. 11.65 × 5 =
  12. 12.81 × 5 =
  13. 13.12 × 5 =
  14. 14.38 × 50 =
  15. 15.89 × 50 =
  16. 16.81 × 50 =
  17. 17.36 × 5 =
  18. 18.29 × 50 =
  19. 19.87 × 50 =
  20. 20.81 × 5 =
  21. 21.97 × 50 =
  22. 22.61 × 5 =
  23. 23.90 × 5 =
  24. 24.47 × 5 =
  25. 25.56 × 50 =
  26. 26.69 × 50 =
  27. 27.96 × 5 =
  28. 28.67 × 5 =
  29. 29.88 × 50 =
  30. 30.44 × 5 =
  31. 31.83 × 50 =
  32. 32.55 × 5 =
  33. 33.19 × 5 =
  34. 34.90 × 50 =
  35. 35.22 × 5 =
  36. 36.30 × 5 =
  37. 37.19 × 5 =
  38. 38.32 × 5 =
  39. 39.34 × 5 =
  40. 40.18 × 5 =

Answer key

  1. 455
  2. 95
  3. 3450
  4. 90
  5. 265
  6. 75
  7. 2350
  8. 1700
  9. 1600
  10. 190
  11. 325
  12. 405
  13. 60
  14. 1900
  15. 4450
  16. 4050
  17. 180
  18. 1450
  19. 4350
  20. 405
  21. 4850
  22. 305
  23. 450
  24. 235
  25. 2800
  26. 3450
  27. 480
  28. 335
  29. 4400
  30. 220
  31. 4150
  32. 275
  33. 95
  34. 4500
  35. 110
  36. 150
  37. 95
  38. 160
  39. 170
  40. 90

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