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Published byPiers McDaniel Modified over 7 years ago

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To compare fractions you can draw a picture or use the “Butterfly” method.

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< Draw a picture Use >, <, or =.

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910< < “Butterfly” method

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Use >, <, or =. 1210 > > “Butterfly” method

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To order fractions you can draw a picture or use the Least Common Denominator (LCD).

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Draw a picture Order : least to greatest

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Order the fractions from least to greatest.,,

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One way to compare or order fractions is to express them with the same denominator.

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Any common denominator could be used. But the Least Common Denominator (LCD) makes the computation easier.

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The Least Common Denominator is the Least Common Multiple of the denominators. LCD = LCM

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Use LCD List the fractions in order from greatest to least.

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Use LCD Step 1: Find the LCM of the denominators

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6, 12, 18, 24, 30, 36, 42, 48… LCD = 36 Find the LCD: 12, 24, 36, 48 … 9, 18, 27, 36, 45 … 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36 …

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Step 2: Write equivalent fractions. 36 x 6 6 36 x 3 21 36 x 4 20 36 x 12 24

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G L Step 3: Compare the numerators 36 6 21 36 20 36 24

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Use LCD In order from greatest to least:

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