Question

Tap on the correct answer:
Use box method of multiplication to find 472 $\times$ 155 .

• A. $74,160$
• B. $73,160$
• C. $73,960$

Answer 1

The correct option is B $73,160$

To multiply two numbers using the box method, we must first express them in expanded form.

$\therefore$ Numbers in expanded form are:
$472=400+70+2$ and
$155=100+50+5$

Now, $472\times 155=(400+70+2)\times (100+50+5)$
Since, both the numbers are of three digits, we need $3\times 3$ box as depicted in figure below,


Sum of numbers in each box will give the product of $472\times 155$

Therefore, $472\times 155=73,160$