Find the Approximate Square Root of 134: Numerical Estimation

To solve this problem, we'll follow these steps:

• Step 1: Identify the last digit of the number, which is the ones digit.
• Step 2: Apply the rounding rule for the nearest ten based on the ones digit.
• Step 3: Use the rules to determine the correct rounded number.

Let's proceed through these steps:
Step 1: The number given is $134$. Here, the ones digit is $4$.
Step 2: When rounding to the nearest ten, we consider the rule: if the ones digit is less than $5$, round down; if it is $5$ or more, round up.
Step 3: Since the ones digit is $4$, which is less than $5$, we round down. Therefore, we decrease $134$ to the nearest ten, which is $130$.

Therefore, the solution to the problem is $130$.