To convert the mixed number 1 5 into an improper fraction, you follow a simple process.
First, take the whole number part, which is 1. In terms of improper fractions, we think of it as having a denominator that matches the fractional part, which is 5. So, we can express 1 as 5/5.
Next, we add the fractional part (5) to this. This gives us:
5/5 + 5/5 = 10/5.
Therefore, the mixed number 1 5 can be written as the improper fraction 10/5.