#### Answer

0.003 kg

#### Work Step by Step

3 g to kg
Unit for the answer (g) is in numerator; unit being changed (kg) is in denominator so it will divide out. The unit fraction is $\frac{1 Kg}{1000 g}$ .
Multiply 3 g times to the unit fraction
3 g * $\frac{1 Kg}{1000 g}$ = 0.003 kg