Page 195 - Basic College Mathematics with Early Integers

172 C HAPTE R 3 I FRACTIONS

PRACTICE 8 3
8. of a figure
Draw and shade a part of a fig- 8
ure to represent the fraction. If you’d like, our figure can consist of 8 triangles of the same size.We will shade
7 3 of the triangles.
of a figure
11 3 triangles shaded

≈ of the figure or
diagram is shaded
8 triangles
Work Practice 7–8

6
Concept Check If represents of a whole diagram,
7
sketch the whole diagram.

PRACTICE 9 Example 9 Writing Fractions from Real-Life Data
Of the eight planets in our solar
Of the eight planets in our solar system (Pluto is now a dwarf planet), three are
system, five are farther from
closer to the Sun than Mars.What fraction of the planets are closer to the Sun than
the Sun than Earth is.What
Mars?
fraction of the planets are
farther from the Sun than
Earth is?

Solution: The fraction of planets closer to the Sun than Mars is:

3 ; number of planets closer
8 ; number of planets in our solar system
3
Thus, of the planets in our solar system are closer to the Sun than Mars.
8
Work Practice 9

Objective Identifying Proper Fractions, Improper Fractions,
and Mixed Numbers

Answers The definitions and statements below apply to positive fractions.
8. answers may vary; for example, A proper fraction is a fraction whose numerator is less than its
denominator. Proper fractions are less than 1. For example, the
2
shaded portion of the triangle is represented by .
5 3
9. Copyright 2012 Pearson Education, Inc.
8 An improper fraction is a fraction whose numerator is greater
than or equal to its denominator. Improper fractions are greater s
Concept Check Answer than or equal to 1.