4.173 → 4.170
4.173
The second place after the decimal is the hundreth.
We only round up if the number after is 5 or higher.
The number is 3, so we won't round up.
4.17
To round 4.173 to the nearest hundredth, identify the hundredths place (7) and look at the following digit (3). Since 3 is less than 5, we round down, resulting in 4.17.
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