9.7
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It is 27.6
It is 7.8
To round 2.78 to one decimal point, we look at the digit in the second decimal place, which is 8. Since 8 is greater than or equal to 5, we round up the tenths place digit by adding 1 to it. Therefore, 2.78 rounded to one decimal point is 2.8.
It will round up to 0.9 to one decimal place
6.666