It is 316 cents. 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 nor does it require a number in mixed units to be presented in terms of the larger unit (dollar) rather than the smaller one (cent).
In terms of dollars, 16 cents = 0.16 dollars.
$120.20
3 cents in decimal
25 cents is 0.25
.06
0.51
0.55 dollars or 55 cents
$0.30
You put a period between the dollars and cents.
5.37
$5.09
$5.82