101.5
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7 10ths.
9 10ths
Since 0.8 is equal to 8/10ths, -0.8 is equal to -8/10ths and -0.80 is also equal to -8/10ths. If you simplify -8/10ths by dividing the numerator and the denominator by 2 you get :-4/5ths
To round to nearest 10th, look at the 100th place. If it is 5 or more, round the 10ths place up, otherwise leave it the same, and drop the rest of the decimal. So 5.524 rounded to the nearest 10th is 5.5, since the 100ths place is 2.
8.5