There are multiple methods of rounding but the most common by far is to round up to the next whole number at .5 and higher (1/2 or more) and round down below .5 (less than 1/2).
Ex:
10.1 rounds down to 10
10.49 rounds down to 10
10.5 rounds up to 11
10.99 rounds up to 11
10-1/2 rounds up to 11
10-29/60 rounds down to 10
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A unit rate cannot have a remainder. A unit rate is a ration that has the unit as one and the rate has to be equal. If not, you either did a calculation mistake or the ratio is not a unit rate.
when rounding to the nearest whole number 0.49 ~ 0 as anything lower than .5 you round down to the nearest whole number anything that is .5 or over you round up. if you'd asked about 0.50, then the nearest whole number is 1
If the remainder is greater than the divisor then you can divide it once more and get one more whole number and then have less remainders.
To convert an improper fraction into a mixed number, divide the numerator (top number) by the denominator (bottom number) to give a whole number and a remainder. Write the whole number and put the remainder over the original denominator after it: 39 ÷ 6 = 6 r 3 => 39/6 = 63/6 = 61/2
The answer is given below.