-Compares different parts of a group to each other.
-Compares two quantities measured in the same units.
Ex. A:B, 4:5, 5 to 4
-Compares one part of a group to the whole gruop.
-Compares three quantitie measured in the same units.
Ex. A:B:C, 4:5:6, 6 to 5 to 4
-Compares two quantities measured in different units.
-Unit Rate-a rate in which the second term is one.
-Unit Price-a unit rate used when shopping.
-A relationship that says that two ratio or two rates are equal
Ex. use it to find 15 chickens if 5 costs $0.10
5 / $0.10 = 15 / $x ; x= $0.30 ( multiply by 3)