Question

Round off $25.38546$ correct to one decimal place.

Answer 1

To round off a number to certain decimal places, following are the steps;

1. Identify the digit to one more place than you need.
2. If the extra digit is $5$ or more, then add $1$ to the number before it.
3. If the extra digit is less than $5$, then leave the number as it is.

Hence, $25.38546$ can be expressed as $25.4$ as the second decimal place is more than $5$.