One thing we will need to do a lot this semester is convert units. Converting units means changing a length we've measured in centimeters into the equivalent length in millimeters. So if my hand is 10 centimeters wide, I can convert to millimeters and report that my hand is also 100 millimeters wide. It is the same distance, just reported in different units of measurement. 1 cm = 10 mm If you have 5 cm and want to know how many millimeters that is, you multiple 5 cm x 10 mm = 50 mm. If you have 50 mm and want to know how many cm, you divide by 50 mm by 10 mm = 5 cm. If I have a credit card that is 8.6 cm long, how many mm long is it? You should be precise to the nearest millimeter...don't round to the nearest centimeter. Group of answer choices 86 mm 8.6 mm 8.6 cm 8 cm 80 mm