Skill: Convert mixed numbers to improper fractions

A mixed number has a whole-number part and a fraction part. To convert it to an improper fraction:

1. Multiply the whole number by the denominator.
2. Add the numerator.
3. Keep the denominator the same.

Example: Convert $2\frac{3}{5}$ to an improper fraction.

• Multiply the whole number by the denominator:
  $2 \times 5 = 10$
• Add the numerator:
  $10 + 3 = 13$
• Keep the denominator, $5$.

So,

$$2\frac{3}{5}=\frac{13}{5}$$

This makes sense because each whole has $5$ fifths. The $2$ wholes give $2 \times 5=10$ fifths, and the extra fraction gives $3$ more fifths. Altogether, there are $13$ fifths.