Question

$28\times 32$ can be estimtated to .

• A. $900$
• B. $1000$
• C. $800$

Answer 1

The correct option is A $900$

We have to estimate $28\times 32$
Now, for estimation $28$ can be estimated to $30$
And, $32$ can be estimated to $30$.


$\Rightarrow 28\times 32\approx 30\times 30$
$\Rightarrow 28\times 32\approx (3\times 10)\times (3\times 10)$
$\Rightarrow 28\times 32\approx 900$