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Unformatted text preview: 15, 18, and 36 Use: Finding common denominators Example 5: Find the least common denominator (LCM) for 1 5 7 8 6 10 + + Adding/Subtracting Fractions Step 1: Find a least common denominator Step 2: Change the numerator of each fraction accordingly Step 3: Add or subtract the numerators; keep the denominators unchanged Step 4: Reduce the answer, if possible Example 6: Work each problem. A. 7 2 18 27 + B. 7 11 15 27 + C. 21 13 16 10D. 7 5 8 8 Multiplying Fractions Step 1: Multiply numerators. Multiply denominators Step 2: Reduce the answer, if possible. Example 7: Multiply each. A. 1 2 5 3 B. 5 2 8 3 C. 8 35 15 16 D. 1 10 5 3 ** 3 2 6 5 4 7 You can use the cancelling method, if you know how to do it. Dividing Fractions Step 1: Multiply the first number by the reciprocal of the second number. Step 2: Reduce your answer, if possible. Example 8: Find each answer. A. 3 7 2 6 B. 4 8 9...
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This note was uploaded on 02/22/2012 for the course MATH 1300 taught by Professor Staff during the Spring '08 term at University of Houston.
 Spring '08
 Staff
 Math, Factors, Prime Numbers

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