Use
ratio and rate reasoning to solve real‐world and
mathematical problems, e.g., by reasoning about tables of equivalent
ratios, tape diagrams, double number line diagrams, or equations.
a.
Make
tables of equivalent ratios relating quantities with whole‐number measurements, find missing
values in the tables, and plot the pairs of values on the coordinate plane.
Use tables to compare ratios.
b. Solve unit rate problems including
those involving unit pricing and constant speed. For example, if it took 7 hours to mow 4 lawns, then at that rate,
how many lawns could be mowed in 35 hours? At what rate were lawns being
mowed?
c.
Find
a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means
30/100 times the quantity); solve problems involving finding the whole,
given a part and the percent.
d.
Use
ratio reasoning to convert measurement units; manipulate and transform
units appropriately when multiplying or dividing quantities.
