Which of the following best describes the purpose of converting a percentage to a decimal in these problems?

• A. To enable multiplication or division in calculations
• B. To increase the number's value
• C. To convert to a fraction
• D. To express as a whole number

Answer: (A)

Converting a percentage to a decimal makes calculations straightforward because percentages are per hundred. For example, 18% becomes 0.18, and you can multiply by a total to find the actual amount (like tax, discount, or commission) or divide as needed. In real estate math, you frequently need those portions of a total, so using the decimal form lets you perform multiplication or division directly and accurately. The other options aren’t the primary purpose: converting to a decimal doesn’t inherently increase value, and while you could express the value as a fraction, the decimal form is used to simplify the arithmetic; and you aren’t restricted to whole numbers since decimals can represent fractions.