(a) Convert 78 mm to cm

Did you know that the metric system is designed to be super straightforward? To convert millimeters to centimeters, you just need to remember that 10 mm equals 1 cm. So, for your conversion, simply divide 78 mm by 10, which gives you 7.8 cm. Easy peasy! Now, if you ever find yourself needing to switch between other metric units, always keep in mind the base unit conversions—like 1000 grams in a kilogram. Understanding how these units relate can make math feel like a breeze instead of a brain workout!