Transcription of FRACTION REVIEW
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FRACTION REVIEW
Business Math Study Guide 2 Page 1 FRACTION REVIEW A. INTRODUCTION 1. What is a FRACTION ? A FRACTION consists of a numerator (part) on top of a denominator (total) separated by a horizontal line. For example, the FRACTION of the circle which is shaded is: 2 (parts shaded) 4 (total parts) In the square on the right, the FRACTION shaded is 83 and the FRACTION unshaded is 85 FRACTION = numerator denominator 2. Equivalent fractions Multiplying The three circles on the right each have equal parts shaded, yet are represented by different but equal fractions . These fractions , because they are equal, are called equivalent fractions . Any FRACTION can be changed into an equivalent FRACTION by multiplying both the numerator and denominator by the same number 21 = 42 or 21 84 so 844221 Similarly 95 = 1810 or 95 = 2715 so 95 = 1810 = 2715 You can see from the above examples that each FRACTION has an infinite number of fractions that are equivalent to it.
Simplifying fractions All types of fractions must always be simplified (reduced to lowest terms). e.g. 9 6 = 3 2, 2 25 5 = 2 , 18 27 = 2 3 = 1 2 1 Note that many fractions can not be reduced …
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