2.81 is 281% (multiply a decimal by 100 to get the percentage).
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1 x 281, 281 x 1
281 to the nearest tens is 280
Yes 281 is a prime number, as it can only be divided only by 1 and itself.
When rounding 281 to the nearest ten, you look at the digit in the tens place, which is 8. Since 8 is greater than or equal to 5, you round up. Therefore, 281 rounded to the nearest ten is 280.
It is: 281 and 7/20 in its simplest form