Perform the indicated operations assuming all numbers are approximate and round the answer appropriately. Use the procedure

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Perform the indicated operations assuming all numbers are approximate and round the answer appropriately. Use the procedure shown in Example 11.

8.75 + (1.2)(3.84)


Data from Example 11

For problems with multiple operations that require using more than one of the rules given on the previous page, follow the correct order of operations as given in Section 1.2. Keep all the digits in the intermediate steps, but keep track of (perhaps by underlining) the significant digits that would be retained according to the appropriate rounding rule for each step. Then round off the final answer according to the last operation that is performed. For example,


Note that three significant digits are retained from the multiplication and one decimal place precision is retained from the addition. The final answer is rounded off to two significant digits, which is the accuracy of the least accurate number in the final division (based on the underlined significant digits).

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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