The Algebra Teacher\'s Guide to Reteaching Essential Concepts and Skills

Name Date

WORKSHEET 2.13: WRITING RATIOS CORRECTLY

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A ratio is a pair of numbers that makes a comparison or describes a rate.

a

b

,a:b,oratobare

three ways to express a ratio.ais the first term of the ratio andbis the second term.

EXAMPLES

1. Write the ratio of the number of sides of a triangle to the number of sides of a square.
   Because order matters, the number of sides of a triangle, 3, is the first term. The num-
   ber of sides of a square, 4, is the second term. The ratio is

3

4

.

2. Find the ratio of an inch to a foot. Because 1 foot equals 12 inches, the ratio of an inch to
   a foot is

1

12

.

DIRECTIONS: Write a ratio to describe each situation. Express each ratio in simplest

form.

1. Reading 3 books in 4 weeks 2.Traveling 60 miles in 3 hours

3.2feetto1yard 4.The diameter of a circle to the radius

5. 5 computers to 20 students 6.A penny to a dollar

7.12 girls to 30 students 8.5 centimeters to a meter

CHALLENGE:The ratio of Simone’s soccer team’s games won to games

played is

2

3

and the ratio of games lost to games played was

4

15

. Write the
ratio of games tied to games played. Explain your answer.

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Copyright

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2011 by Judith A. Muschla, Gary Robert Muschla, and Erin Muschla. All rights reserved.