What is one twentyfifth in decimal form?
one twenty fifth in decimal form is 0.04.
120 is already in decimal form. You do not need to have a decimal point for a number to be in decimal form. All that is required is that the place values go down by a factor of one-tenth every time you move one digit to the right. Also the digit to the left of the decimal point (or where the decimal point would have been) has a unit place value.