Complete the Decimal: Express 1.3 in Standard Form

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

• Step 1: Recognize that the decimal number $1.3$ can be split into its whole number and decimal parts: $1$ and $0.3$.
• Step 2: Convert the decimal part $0.3$ to a fraction. Since $0.3$ is equivalent to $\frac{3}{10}$, we have converted the decimal to a fraction with a denominator of 10.
• Step 3: Combine the whole number part and the fractional part to form a mixed number. Thus, $1.3$ is equivalent to $1\frac{3}{10}$.

Therefore, the solution to the problem is $1\frac{3}{10}$.