Question

The value of $9\times 7\times 6$ is .

• A. $376$
• B. $378$
• C. $370$
• D. $380$

Answer 1

The correct option is B $378$

To calculate $9\times 7\times 6$, we first multiply $9$ and $7$, and then multiply their product with $6$.

Hence,
$9\times 7\times 6$
$=(9\times 7)\times 6$
$=63\times 6$
$=(60+3)\times 6$

Now, we use box method to calculate $(60+3)\times 6$.

	$6$
$60$	$60\times 6$ $=10\times 6\times 6$ $=10\times 36$ $=360$
$3$	$3\times 6$ $=18$

$\therefore (60+3)\times 6=360+18=378$

Hence, the value of $9\times 7\times 6$ is $378$.