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Modeling Multiplying Fractions by Fractions
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Brownie Pan Example Amici Bakery has of a brownie pan left. They sell of the pan to Mrs. Chanley. How much of the brownie pan did Mrs. Chanley buy? Think: Mrs. Chanley buys what part of the pan of brownies that remains? of
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What is three-quarters of the one-third? In other words…
How many boxes out of the total boxes have overlapping colors?
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3 4 × 1 3 = 3 12 Mrs. Chanley purchased of the whole brownie pan.
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Brownie Pan Example 2 Mr. Higgins owns of an acre of land. He wants to sell of the land to his friend. How much of the acre did Mr. Higgins sell? Think: Mr. Higgins sells what part of the acre that he owns? of
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What is four-fifths of the three-quarters? In other words…
How many boxes out of the total boxes have overlapping colors?
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4 5 × 3 4 = 12 20 Mr. Higgins sold of an acre of land.
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Brownie Pan Example 3 Mr. Sidler takes home of a pan of lasagna that is full from his aunt’s house. How much of the pan of lasagna does Mr. Sidler take home? Think: Mr. Sidler takes home what part of the lasagna that remains? of
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What is one-half of the three-sevenths? In other words…
How many boxes out of the total boxes have overlapping colors?
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Mr. Sidler brought home 3 14 of the whole pan of lasagna.
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