If both the numerator and the denominator of a fraction are multiplied by the same nonzero number, then the value of the fraction is unchanged. The denominator of a fraction cannot be 0.Ī fundamental principle of fractions is the cancellation law. For example, in the fraction, 7 is the numerator, and 10 is the denominator. The number above the fraction bar is the numerator, and the number below the fraction bar is the denominator. The division line in a fraction is the fraction bar. When the unit (the distance between 0 and 1) is divided into 10 equal parts, the fraction is a point on the number line, as shown in Figure 5.1. For example, if an inch is broken into 10 equal parts, then represents seven of those equal parts. If a unit is broken into equal parts, then a fraction represents one or more of those equal parts. In this chapter, you learn how to work with fractions.Īs greater precision in measurement was needed, the concept of fractions (rational numbers) was invented. Easy Mathematics Step-by-Step (2012) Chapter 5.

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