Grade 7 » Ratios & Proportional Relationships
Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. For example, if a person walks 1/2 mile in each 1/4 hour, compute 这7只成长股对长期投资者颇具吸引力 the unit rate 这7只成长股对长期投资者颇具吸引力 as the complex fraction 1/2 /1/4 miles per hour, equivalently 2 miles per hour.
Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.
Represent proportional relationships by equations. For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.
CCSS.Math.Content.7.RP.A.这7只成长股对长期投资者颇具吸引力 这7只成长股对长期投资者颇具吸引力 2.d
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.
Use proportional relationships to solve multistep ratio and percent problems. Examples: simple 这7只成长股对长期投资者颇具吸引力 interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.
Copyright © Yamazaki Mazak Corporation. All 这7只成长股对长期投资者颇具吸引力 rights reserved. Products and specifications subject to change without notice.