Question
Express as centimetre (cm) using decimals: $4\ cm\ 5\ mm$
✓
Answer
We know that $10\ mm = 1\ cm$
Therefore $1\text{mm}=\frac{1}{10}\text{cm}$
$4\text{cm}\ 5\text{mm}=4+\frac{5}{10}$
$=4.5\text{cm}$
Therefore $1\text{mm}=\frac{1}{10}\text{cm}$
$4\text{cm}\ 5\text{mm}=4+\frac{5}{10}$
$=4.5\text{cm}$
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