Question

Express as centimetres using decimals: $164mm$

Answer 1

Express the given unit in centimetres

As we know that, $1cm=10mm$

So, we can convert millimetres into centimetres by dividing it with $10$.

Given, $164mm$

Using unitary method, we get,

$$\begin{gathered} \Rightarrow 10mm=1cm \\ \Rightarrow 1mm=\frac{1}{10}cm \\ \Rightarrow 164mm=\frac{164}{10}cm \\ \Rightarrow 164mm=16.4cm \end{gathered}$$

Therefore, $164mm$ can be written as $16.4cm$.