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Mathematics 18 Online
OpenStudy (anonymous):

Please help! Which expression will help make the following problem easier to solve using mental math? For each of the past 16 days, Marisela drove 20.1 miles. 16(20) + 20(0.1) 20 • (16 + 0.1) 16 • (20 + 0.1) 16(0.1) + 0.1(20)

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