12
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To round 12.4 to the nearest whole number, we look at the digit immediately to the right of the decimal point, which is 4. Since 4 is less than 5, we round down to the nearest whole number. Therefore, 12.4 rounded to the nearest whole number is 12.
To the nearest whole number or integer it rounds to 12
The answer is 12
When rounding 11.8 to the nearest whole number, you look at the digit in the tenths place, which is 8. Since 8 is equal to or greater than 5, you round the whole number up. Therefore, 11.8 rounded to the nearest whole number is 12.
12.0 km