Question

Round off the following to the nearest ten.

$166$

Answer 1

Rounding off a number to the nearest $10$:

Look at the digit in the one's place,

• If it is less than $5$, round down to the smaller multiple of $10$.
• If it is $5$ or more, round up to the greater multiple of $10$.

The number $166$ lies in between the two consecutive multiples of $10$ which are $160$ and $170$.

Also, $166$ has the digit $6$ in the one's place which is greater than $5$.

So, according to the rule given, $166$ will be rounded up to the greater multiple of $10$.

The greater multiple of $10$ in between $160$ and $170$ is $170$.

Therefore, $166$ is rounded to $170$.