1. The problem is to write 6.38% as a decimal. 2. Recall that percent means per hundred, so 6.38% means 6.38 out of 100. 3. To convert a percent to a decimal, divide by 100. 4. Write the formula: $$\text{Decimal} = \frac{\text{Percent}}{100}$$ 5. Substitute the value: $$\text{Decimal} = \frac{6.38}{100}$$ 6. Simplify the division: $$\text{Decimal} = 0.0638$$ 7. Therefore, 6.38% as a decimal is 0.0638.