Question

Find the product, using suitable properties.
$1005\times 168$

Answer 1

$1005\times 168$ can be written as:
$=168\times \left(1000+5\right)$ ( By using distributive property)
$=168\times 1000+168\times 5$ ( By removing bracket)
$$\begin{gathered} =168000+840 \\ =168840 \end{gathered}$$
Hence the value of $1005\times 168=168840$