It is 710, as in the question. There is no need to add a decimal point. Adding a decimal point and one or more 0s is wrong because that implies a degree of precision that cannot be justified.
You have already expressed it as a decimal.
Yes, it can.
710
That IS the decimal form.
8.5 IS in decimal form.
The decimal form of 710 is simply 710. Decimals are a way to represent numbers that are not whole numbers, and in this case, 710 is already a whole number, so its decimal form remains the same. The decimal point is typically placed at the end of a whole number to indicate that there are no tenths, hundredths, or thousandths.
710
710
710
You have already expressed it as a decimal.
The line in a fraction can be read as "divided by." 7/10 = 7 divided by 10 = 0.7 = 0.70 to the nearest hundredth
1710.0
7.10 = 710%
7.10 = 710%
7/10 = 0.7
7/10 = 0.7
If you mean 2 and 7/10 then as a decimal it is 2.7