1/800 = 0.00125
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 does not require a decimal point. So the decimal representation of 800 is 800, exactly as in the question. However, if you msut have a decimal point you could write is as 800. but without any trailing zeros since they would imply a higher level of precision for which there is no justification.
800%= 8.0 in decimal
800 in decimal form = 800.0
800% = 80,000
9+800 is how you write it in standard form
It is 0.800
800 and 8/100 = 800.08 as a decimal
8 hundred = 800 8 hundredths = 0.08
It is already written in decimal form.