To round 41.5 to the nearest whole number, you look at the digit immediately to the right of the decimal point, which is 5 in this case. Since 5 is equal to or greater than 5, you round the number up. Therefore, 41.5 rounded to the nearest whole number is 42.
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41.5 rounded to the nearest whole number is 42 because .5 rounds up to 1
That would depend on what you were rounding it to. If rounding to the nearest whole number, then it does not need rounding. If rounding to the nearest ten, it would be 420. If rounding to the nearest hundred, it would be 400.
400
To round 415 to the nearest 10, we look at the digit in the tens place, which is 1. The digit to its right, 5, is greater than or equal to 5, so we round up. Therefore, 415 rounded to the nearest 10 is 420.
420
478.5