A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?Group of answer choices423.6423.74244231.7420
Question
A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?Group of answer choices423.6423.74244231.7420
Solution
The answer is 424. When rounding off to three significant figures, you look at the digit in the fourth place. If this digit is 5 or more, you round up the third digit. In this case, the fourth digit is 6, which is more than 5, so you round up the third digit from 3 to 4. Therefore, 423.6059 rounded off to three significant figures is 424.
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