To round 3.87129 to one decimal place, we look at the digit in the tenths place, which is the 7. Since 7 is greater than or equal to 5, we round up the digit in the tenths place. Therefore, 3.87129 rounded to one decimal place is 3.9.
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It is then 5.7 when rounded to one decimal place
10.27 rounded to one decimal place = 10.3
3.214 rounded to one decimal place is 3.2
4.396 rounded to one decimal place is 4.4
It is 61.3 when rounded to one decimal place