Decimal places are used in mathematics for the same reasons that commas are used. Decimal places are used to break up large numbers in order to make them easier to read.
1.7 (1 decimal place) or 1.66 (2 decimal places)
The mean average of something can, and usually does, have decimal places.
It is already rounded in decimal places but if you mean to one decimal place then it is 10.0
You move the decimal 2 places to the right
It means accuracy within a stated criteria as for example working out a problem to the nearest 3 decimal places
How should i know?Go ask your math teacher.
As a percentage it is 31.21% rounded up to two decimal places
Two decimal places means two numbers after the decimal point. (which looks like a period)
the repeating term of a decimal
two decimal places