This example problem illustrates the method to convert kilograms to grams.
How many grams are in an eighth of a kilogram?
There are 1000 grams in 1 kilogram.
Set up the conversion so the desired unit will be cancelled out. In this case, we want g to be the remaining unit.
mass in g = (mass in kg ) x (1000 g/1 kg)
Note how the kilograms unit will be cancelled out in this equation.
mass in g = (1/8 kg) x 1000 g/kg
mass in g = (0.125 kg) x 1000 g/kg
mass in g = 125 g
There are 125 grams in an eighth of a kg.