Feedback: Not quite! A liter is 1,000 cubic centimeters, each containing 1,000 cubic millimeters, so 1 liter equals 1,000,000 cubic millimeters.
Feedback: Well done! A liter is 1,000 cubic centimeters, each containing 1,000 cubic millimeters, so 1 liter equals 1,000,000 cubic millimeters.