Convert Mixed Number 3 7/100 to Decimal Form: Step-by-Step

To solve this problem, we need to convert the given mixed number $3\frac{7}{100}$ into a decimal.

Step 1: Identify the fraction part of the mixed number, which is $\frac{7}{100}$.

Step 2: Convert the fraction $\frac{7}{100}$ into a decimal. Since the denominator is 100, which is convenient for direct conversion, you simply interpret it as the number of hundredths:
$\frac{7}{100} = 0.07$

Step 3: Combine this decimal with the whole number part of the mixed number. The integer part of the mixed number is 3. Therefore, adding the decimal we found:
$3 + 0.07 = 3.07$

Thus, the decimal representation of $3\frac{7}{100}$ is $\mathbf{3.07}$.