Standard units are measurements that everyone agrees upon, making it easier to communicate and understand sizes, weights, and distances. For example, the metric system uses units like meters for length and kilograms for weight, while the imperial system uses feet and pounds. These standard units help ensure that people around the world can share information accurately. Using standard units is important in many fields, such as science, engineering, and cooking. When a recipe calls for 200 grams of flour, everyone knows exactly how much to use. This consistency helps avoid confusion and ensures that results are reliable, whether in a laboratory or a kitchen.