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OpenStudy (anonymous):
Which expression will help make the following problem easier to solve using mental math? Preston bought 2 pizzas that cost $10.50 each. 2(10) + 10(0.5) 2(0.5) + 0.5(10) 10 • (2 + 0.5) 2 • (10 + 0.5)
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OpenStudy (31356):
The last one?
OpenStudy (issy14):
in order to solve it calculate the total cost. How much did he pay for both pizzas? then go one by one and see which one matches the answer that you got.
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