Short Answer 
Rounding off is a method that simplifies numbers by reducing their digits while maintaining their value. To round the number 87392, the ones place digit (2) is identified and since it’s less than 5, the number is rounded down to 87390.
Step 1: Understanding Rounding Off
Rounding off is a mathematical process that simplifies a number while keeping its overall value similar. This technique helps make calculations easier by reducing the number of digits. The aim is to get closer to a specific round number, which is often more useful in real-life scenarios.
Step 2: Identifying the Relevant Digits
To round off the number 87392, first identify the smallest place digit, which is in the ones position. In this case, the ones place digit is 2. The rule to apply here is determined by the value of this digit compared to 5: if it’s 5 or greater, round up; if it’s less than 5, round down.
Step 3: Applying the Rounding Rule
Since the digit in the ones place (2) is less than 5, the rounding rule tells us to round down. Therefore, we change the last digit to 0 while keeping the other digits the same, resulting in the rounded number of 87390. The final answer confirms that the original number 87392 rounds off to 87390.