1.5 Comparing Fundraising Goals:
Using Fractions and Ratios
A drawing that looks like a piece of tape, such as fraction strips, used to
Tape Diagram
model expressions is called a ____________________________________.
It is also called a bar model.
Numbers
A ratio comparison statement uses both __________________
and
words
___________________ to show two quantities are related.
Three Ways to Write Ratios:
[1.] For every $60 the 6th graders raise, the 7th graders raise $90.
[2.] The ratio of the 6th grade goal to the 7th grade goal is 60 to 90.
[3.]The ratio of the 6th grade goal to the 7th grade goal is 60 : 90.
FOR EVERY
TO
:
Problem 1.5 Study Guide
 Each group raised the following amounts of money:
o Teachers: $450
o 8th Graders: $112.50
o 7th Graders: $300
o 6th Graders: $250
 By the end of day 10, the teachers reached 5/4 of their
fundraising goal. This means that they raised 1/4 more than they
hoped to!
 To find equivalent fractions, you can multiply the numerator
and denominator of a fraction by the same number.
 In some comparison situations, using fractions is better than
ratios or using ratios is better than fractions.
o Use fractions when you are comparing a part to the
whole.
o Use ratios when you are comparing two numbers.