To determine the distance between two numbers on a number line, you can use the formula for distance:
\[ \text{Distance} = |a - b| \]
In this case, let \( a = 13.48 \) and \( b = -3.46 \).
Now, calculate the distance:
\[ \text{Distance} = |13.48 - (-3.46)| = |13.48 + 3.46| = |16.94| \]
The absolute value is:
\[ |16.94| = 16.94 \]
So the distance between 13.48 and -3.46 is 16.94.