To express $\sqrt{18}$ divided by 3 in its simplest form, follow these steps:

1. Simplify the square root: $\sqrt{18} = \sqrt{9 \times 2} = \sqrt{9} \times \sqrt{2} = 3\sqrt{2}$

2. Divide by 3: $\frac{3\sqrt{2}}{3} = \sqrt{2}$

So, the simplified form of $\sqrt{18} \div 3$ is $\sqrt{2}$.

Would you like more details or have any questions?

Here are five related questions to consider:

1. How do you simplify $\sqrt{50}$?
2. What is the value of $\sqrt{72}$ divided by 6?
3. How do you rationalize the denominator of $\frac{5}{\sqrt{3}}$?
4. What is the square root of a product, such as $\sqrt{45 \times 2}$?
5. How do you simplify $\sqrt{75}$ divided by 5?

Tip: Always try to simplify the square root before performing any further operations.