Expresss $4 c m 8 m m$ as $c m$ using decimals.

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Solution

We know that, $10 m m = 1 c m$ .
We are going from smaller unit to greater unit. So, we will divide the smaller unit to get the bigger unit.
$4 c m 8 m m = 4 c m + 8 m m 4 c m 8 m m = 4 c m + \frac{8}{10} c m 4 c m 8 m m = 4 c m + 0.8 c m$
Therefore, $4 c m 8 m m = 4.8 c m$ .

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