Part to Part Ratio: Compares different parts of the group,to each other
Part to Whole Ratio: a ratio or a fraction that represents a relationship between a part and its whole.
Ratio: a comparison of two numbers by division
2 Term Ratio: Compares two quantities measured in the same units.
Example: 5 blue cars: total cars
3 Term Ratio: Compares three measured in the same units.
Rate: Compares two quantities measured in different units
Example: 3 laps/mins
Unit Rate: ratio of two measurements in which the second term is 1.
Examples: $180 in 20 hours
Proportional Reasoning: relationship that says two ratios are equal.