Question

Express $77m$ as $kilometres$ using decimals.

Answer 1

Converting $m$ to $\left(kilometre\right)km$ using decimals

$1000m=1km$

$\therefore 1m=\frac{1}{1000}km$ (By unitary method)

$\therefore 77m=77\times \frac{1}{1000}=\frac{77}{1000}=0.077$

Hence, $77m=0.077km$.