Weight: Metric and Apothecary Conversion Directions: Fill in the blanks with the correct terms and make the conversions. 1. To convert grams to grains, (multiply/divide) the number of grams by ; to convert grains to grams, (multiple/divide) the number of grains by a. 2g = gr b. 7 1/2 gr (gr viiss) = c. 3 gr = g d. 0.02 g = gr e. 150 gr = f. 0.06 g = gr 2. To convert grains to milligrams, (multiply/divide) the numb grains by ; to convert milligrams to grains, (multiply/divide) the number of milligrams by a. 3 gr (gr iii) = mg b. 10 mg = gr C. y4 gr mg Updated 2018