Convert Mixed Number: Finding the Decimal Form of 3 9/100

To solve the problem of converting $3\frac{9}{100}$ into its decimal form, follow these steps:

• First, recognize that we have a mixed number with a whole part and a fractional part.
• Next, convert the fractional part $\frac{9}{100}$ to a decimal by performing the division $9 \div 100$, which results in $0.09$.
• Finally, add the decimal obtained from the fractional part to the whole number: $3 + 0.09$.

Step-by-step:

Step 1: Convert the fractional part $\frac{9}{100}$ into a decimal:

$\frac{9}{100} = 0.09$

Step 2: Add this decimal to the whole number part:

$3 + 0.09 = 3.09$

Therefore, the decimal form of $3\frac{9}{100}$ is $\mathbf{3.09}$.