Question

Check if the following rounding off is Correct or not .Correct if it is wrong.

$9870\to 9800$

Answer 1

The following rounding off $9870\to 9800$ is incorrect as the given number's highest place value is thousand.So we will round off them to nearest thousands by checking their hundred's place digit.

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

Here hundred's digits is $8>5$.

So, $9870\to 9800$ is incorrect and the correct round off is $9870\to 10,000$.