- Since 5 is in the tenths place, 105.504 is between 105.5 and 105.6
- 105.55 is the midpoint between 105.5 (105.50) and 105.6 (105.60)
- As illustrated on the number line, 105.504 is less than the midpoint (105.55)
- Therefore, 105.504 rounded to the nearest tenth (one decimal place) = 105.5
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