Page 213 - Basic College Mathematics with Early Integers

190 C HAPTE R 3 I FRACTIONS

Solution: First we determine the fraction of parks found in Wyoming state.

2 ; national parks in Wyoming
58 ; total national parks
Next we simplify the fraction.
1
2 2 1 1
= = =
#
#
58 2 29 1 29 29
1
1
Thus, of the United States’ national parks are in Wyoming.
29
Work Practice 12

Calculator Explorations Simplifying Fractions

Scientific Calculator
Many calculators have a fraction key, such as a b/c , that
The Calculator Explorations boxes in
allows you to simplify a fraction on the calculator. For
324 this chapter provide only an introduction to fraction
example, to simplify , enter keys on calculators. Any time you use a calculator,
612
there are both advantages and limitations to its use.
324 a b/c 612 = Never rely solely on your calculator. It is very impor-
tant that you understand how to perform all opera-
The display will read tions on fractions by hand in order to progress
through later topics. For further information, talk to
9 | 17
your instructor.
9
which represents , the original fraction simplified.
17 Use your calculator to simplify each fraction.
Graphing Calculator 128 231 340
1. 2. 3.
Graphing calculators also allow you to simplify fractions. 224 396 459
The fraction option on a graphing calculator may be
999 432 225
found under the MATH menu. 4. 5. 6.
1350 810 315
324
To simplify , enter 54 455
612 7. 8.
243 689
324 612 MATH ENTER ENTER

The display will read
324/612 N Frac 9/17

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