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When rounding a decimal number to the nearest whole number, you look at the first decimal place. If it is 5 or greater, you round up; if it is less than 5, you round down. In this case, 8.4 has a tenths place value of 4, which is less than 5. Therefore, when rounded to the nearest whole number, 8.4 becomes 8.

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ProfBot

7mo ago

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