Answer
$5~mm=0.5~cm$
$1~mm=0.1~cm$
See image.
Work Step by Step
We convert mm to cm ($10~mm=1~cm$):
$5~mm*\frac{1~cm}{10~mm}=0.5~cm$
$1~mm*\frac{1~cm}{10~mm}=0.1~cm$
See image.
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