Part-to-Whole
Relationships
Study this chapter to learn about:■ Fractions
■ Decimals
■ Percentages
■ RatiosT
he following sections all concern part-to-whole relationships. A part-
to-whole relationship can be expressed as a fraction, decimal, percent,
or ratio. It may seem simplistic, but envisioning a pie in these questions
often helps conceptualize the situation. It’s equally important that you
remember that the part must always refer to a whole. People often have a tendency
to say things like, “I have one-fourth,” or “Jack has 20%.” But these statements
beg the question: one-fourth of what? 20 percent of what? When expressing these
relationships algebraically, remember that the part must always be a piece of
some quantity.Fractions
This section discusses fractions. A fraction is a way to represent a piece of a whole.
Fractions look like the following:
1 → numerator
4 → denominatorCHAPTER 10
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