The question makes no sense at all. A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation is not a measurement unit.
In much the same way as anyone writes decimals.
0.0755
8.4
A penny is 1/100 or .01.
Two of them are terminating decimals and recurring decimals
This is a senseless question. Decimals have no weight. Decimals are not a even a measure of weight.
In much the same way as anyone writes decimals.
38 000.00
0.0755
3.25
8.4
9.798 (Surface Gravity)
A penny is 1/100 or .01.
3 litres is a perfectly good answer in decimals. There is no need to add a decimal point simply for the sake of adding one.
247.86 rounded to 2 decimals
terminating decimals and repeating decimals
without decimals you wouldn't be able to figure out how much money you have, you wouldn't be able to get exact temperature you would have to round it off.