* Convert milliliters to liters: There are 1000 milliliters in 1 liter, so 300 milliliters is equal to 300/1000 = 0.3 liters.

* Subtract: 1 liter - 0.3 liters = 0.7 liters

Answer: 1 liter minus 300 milliliters is equal to 0.7 liters.