A metal block has a mass of 540 grams and a volume of 60 cubic centimeters. What is its density, in grams per cubic centimeter?

Density is mass divided by volume: $\frac{540\ \text{g}}{60\ \text{cm}^3}=9$ grams per cubic centimeter, choice G. Check: $9\cdot60=540$. Choice F ($0.11$) divides in the wrong order, $\frac{60}{540}$, which would be volume per gram. Choice J ($480$) subtracts the two numbers instead of dividing. Choice H ($60$) is the volume itself. The units show the right operation: grams per cubic centimeter means grams divided by cubic centimeters. Density tells how tightly the mass is packed into the space.