This document discusses ratios, rates, and unit rates. It defines ratios as a comparison of two quantities or numbers, and rates as a special type of ratio that compares measurements with different units. Key points include:
- Ratios can be written in colon, fraction, or word form and show the relationship between parts or parts to a whole.
- Rates compare similar units, while ratios can compare different units. Rates express one quantity per unit of another.
- Unit rate is a rate where the denominator is 1 unit, allowing direct comparison between items or events.