RATIOS AND PROPORTIONS
CC.7.RP.1 Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units.
-Compute unit rates associated with ratios of fractions. -Include ratios of lengths. -Include area ratios. -Include quantities measured in like units. -Include quantities measured in unlike units. (inches to feet…) CC.7.RP.2a Decide whether two quantities are in a proportional relationship. -Test for equivalent ratios in a table. -Test for equivalent ratios by graphing on a coordinate plane and observing whether the graph is a straight line through the origin. CC.7.RP.2b Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships. -Identify the constant of proportionality (unit rate) in tables. -Identify the constant of proportionality (unit rate) in graphs. -Identify the constant of proportionality (unit rate) in equations. -Identify the constant of proportionality (unit rate) in diagrams. -Identify the constant of proportionality (unit rate) in verbal descriptions. CC.7.RP.2c Represent proportional relationships by equations. -Write equations to represent proportions. Ex: t = nc [Total cost(t) = Number(n) purchased times cost of one(c)] CC.7.RP.2d Explain what a point (x, y) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0,0) and (1,r) where r is the unit rate. -Explain the meaning of a point on a coordinate plane. CC.7.RP.3 Use proportional relationships to solve multistep ratio and percent problems. -Solve simple interest problems. -Solve problems involving sales tax. -Solve problems involving markups and markdowns. -Solve problems involving gratuities and commissions. -Solve problems involving percent of change (decrease and increase). |