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3-109.

Each problem below has an error in the answer. Find the error, explain how to correct the mistake, and correct it.  Homework Help ✎

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    The decimal point is in the wrong place. The answer should be .

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    The decimal points are not lined up. The answer should be .

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    The student did not add 0's to the 100 before subtracting. They also forgot to "borrow" when subtracting. The answer should be .

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    Look at part (a) for help. How many decimal places should there be in the answer?

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    Look at part (c) for help.

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    Look at part (b) for help. Can you quickly estimate what the answer should be close to?