Chapter 6 Study Guide
Pre-Algebra
Ratio and Rates
-Express ratios in simplest form
*When writing a ratio involving measurements,
both quantities need to have the same unit of
measure.
-Find unit rates
-Comparing unit rates
Proportional and Nonproportional Relationships
-Be able to identify proportional and nonportional relationships in a table
-Describe proportional relationships using an equation and being able to fill out parts of a
table
Using Proportions
-Solving proportions
-Using proportions to solve problems
Scale Drawings and Models
-Finding actual measurements (proportion?)
-Know how to find the scale
-Know how to find the scale factor *When finding the scale factor, be sure to use the
same units of measure.
Fractions, Percents, Decimals
-Expressing percents as simplified fractions
-Express fractions as percents
-Expressing percents as decimals
-Expressing decimals as percents
-Putting in order
Using the percent proportion
-Find the part (“is”)
-Find the whole (“of”)
-Find the percent
part = %
whole 100
Using percent equations
-Be able to find the discount (amount by which the regular price of an item is reduced)
-Be able to find the price after the discount is applied
-Applying the Simple Interest Formula Interest = principal x rate (decimal) x time in years
Percent of Change
-Percent of Increase
-Percent of Decrease
(New – Old)
Old
x 100