## Basic College Mathematics (9th Edition)

$1~L$ is greater by $0.01~L$.
First, we convert 990 mL to Liters: $990~ml*\frac{1~L}{1000~mL}=0.99~L$ This is clearly less than $1~L$. We find the difference: $1~L-0.99~L=0.01~L$