Two Term Ratio: compares 2 quantities measured in the same units.
or 1:2 or 1/2 or 1 to 2
Three Term Ratio: compares three quantities measured in the same units.
or 1:2:3 or 1 to 2 to 3
Part to Part Ratio: compares different parts of a group to each other.
ex. 1:1 or 1 to 1
Part to Whole Ratio: compares one part of a group to the whole group.
1/2 or 50% or 0.5 - A part to whole ratio can be written as a fraction, a decimal, and a percent.
ates: compares two quantities measured in different units.
$2.00 per 10g or $2.00/10g- rates can be used when buying food.
Unit Rate- a rate in which the second term is one.
20km an hour or 20km/hr
Unit Price- a unit rate used when shopping.
per 100g or per 100ml
Proportion- a relationship that says that two ratios or two rates are equal.