Question

Estimate the following using the general rule :$796-314$

Answer 1

Given difference is $796-314$.

For rounding off to nearest hundreds,we first check the digit at ten's place.If the digit at ten's place is less than $5$ then we replace its ten's and one's place by zero but if the digit at ten's place is $\ge 5$ then we add $1$to hundred's place digit and then replace ten's place and one's place by zero.

Using general rule,

$\begin{array}{rcl}796& \to & 800\\ 314& \to & 300\\ So,796-314& =& 800-300\\ & =& 500\end{array}$

Hence, using the general rule :$796-314\to 500$.