What term describes a measurement that compares a number to 100?

The term that describes a measurement comparing a number to 100 is "percent." A percent represents a way of expressing a number as a fraction of 100, which makes it easier to understand the relative size of one quantity compared to another. For example, if you have 20 out of 100, that would be equivalent to 20 percent. This concept is widely used in various fields including finance, statistics, and education to quantify and compare values in a straightforward manner.

A ratio refers to a relationship between two numbers, expressing how many times the first number contains the second. A fraction represents a part of a whole and can show the relationship between two quantities in terms of a numerator and a denominator. A proportion, on the other hand, is an equation that states that two ratios are equivalent. Understanding these distinctions is important in various mathematical and practical contexts, particularly in the field of electrical work, where calculations and measurements are frequently applied.