Convert Mixed Number: Express 1 9/100 as a Decimal

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

• Step 1: Convert the fractional part $\frac{9}{100}$ to a decimal form.
• Step 2: Add the decimal result to the whole number part, which is 1.

Now, let's work through each step:
Step 1: The fraction $\frac{9}{100}$ can be directly converted to its decimal form $0.09$ by performing the division $9 \div 100$.
Step 2: Adding the decimal form of the fraction, $0.09$ to the whole number 1, we get $1 + 0.09 = 1.09$.

Therefore, the decimal form of $1\frac{9}{100}$ is $1.09$.