Chapter 7 - Measurement - 7.3 The Metric System - Capacity and Weight (Mass) - 7.3 Exercises - Page 500: 43

850 mg

0.85 g to mg Unit for the answer (mg) is in numerator; unit being changed (g) is in denominator so it will divide out. The unit fraction is $\frac{1000 mg}{1 g}$. Multiply 0.85 g times to the unit fraction 0.85 g * $\frac{1000 mg}{1 g}$= 850 mg