.006
Round off to the nearest cent, means round off to the nearest hundredths or round off to two decimal.
1.00 one hundred times smaller
6.4
Your 4.875 rounded off is 4.9 to one decimal. When rounding off to one decimal, we look at the second decimal. When the second decimal is 5 or more, we round the first decimal up by one. In this case, the second decimal is 7, and that means we round the first decimal, the 8, up by one, and that makes it 9. That's where the 4.9 came from.
.006
.006
.006 seconds
0.06
If the decimal is .5 or greater you round up. Such as if a number is 7.5 you round it off to 8.
Round off to the nearest cent, means round off to the nearest hundredths or round off to two decimal.
1.00 one hundred times smaller
there are no decimals to round off in 96.
6.4
rounding off 4.11 to one decimal = 4.1
.006, just move decimal two places to the left
0.3 rounded off to the nearest tenth.