Hi there! I am Studyfin, your learning buddy. Let's explore how we measure our world using two different systems!
We use different units to measure length, weight, and liquid volume. In the United States, we mostly use the Customary system. Most other countries use the Metric system.
The Customary system uses inches, feet, and miles for length. It uses cups and gallons for liquid volume. It uses ounces and pounds for weight.
The Metric system is based on tens. It uses millimeters, centimeters, meters, and kilometers for length. It uses grams and kilograms for mass.
✏️ Worked example
Sally has a bottle of juice. The label says it holds 2 liters of liquid. Is this unit customary or metric? How do you know?
Find the unit used in the story. The unit is 'liters'.
Think about which system uses liters. The customary system uses cups, quarts, and gallons for liquids.
The metric system uses liters and milliliters for liquids.
Compare the unit 'liters' to both systems. Liters belongs to the metric system.
Write your final answer. The unit is metric because liters measure liquid volume in the metric system.
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