Question

Find the product of $1005\times 168$ using Distributive laws

Answer 1

We know from Distributive law of multiplication over addition for $a,b,c$

$a(b+c)=ab+bc$

Therefore we have

$1005\times 168=(100+5)\times 168$

$=100\times 168+5\times 168$

$$\begin{gathered} =168000+840 \\ =168840 \end{gathered}$$