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					JAMES MARTIN MIDDLE SCHOOL                                 MATH DEPARTMENT                     2011-1212             ∑ ≠
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Name_________________________________________________________________                                                        √
DATE____________________                                                                                                 π
Test #1 Practice Test C&S    WORK MUST BE SHOWN FOR CREDIT

Writing Mathematical Comparisons                                                       5/5 = A 4/5 = B 3/5 NY

A survey of 120 players in a soccer league asked which drink they preferred during and after a game.

Write mathematical comparison
statements about player drink
preferences during the game.


    a. One statement using ratios
    Students prefer water to juice during the game by a ratio of 40 to 10 or 4 to 1.

    b. One statement using percents
    58.3% of the students prefer a sports beverage to the other drinks during the game.


2. Write mathematical comparison statements about player drink preferences after the game.
a. One statement using fractions
2/3 of the students prefer juice to the other drinks after the game.

b. One statement using differences
20 fewer students prefer a sports beverage to water after the game.

3. a. Write a ratio to describe the number of players who prefer a sports beverage to water during the
game.
70 to 40

    c. Write an equivalent form of the ratio.
35 to 20, 140 to 80, 175 to 100, or 7 to 4



Write Ratios

4. The soccer league director makes the following statements based on the survey. Which statements
are accurate? Explain.
       a. During the game, players prefer juice to water by a ratio of 4 to 1.

Not accurate. The ratio should be 10 to 40 or 1 to 4 OR the order of the ratio should be switched to “water to juice.”

        b. 25% of the players prefer water after the game.
Accurate.

        c. More than half of the players prefer a sports beverage during the game.
Accurate.
5. So far this year, the University of North Carolina Tar Heels have won 22 games and lost 5 games.
    a. Suppose they continue at the same pace and lose 45 games. How many will they have won?
They will win 198 games

A ratio, percent, fraction, or difference may be used as long as the explanation is reasonable


    b. What is an appropriate comparison to make between the number of games won and the
       number of games lost? Explain why you chose that type of comparison.

A ratio, percent, fraction, or difference may be used as long as the explanation is reasonable


Comparing Ratios, Percents and Fractions                4/4 = A             3/4 = B       2/4 = NY

Solve the following problems using this table.
The table shows the all-time top 10 American movies in terms of North American Box Office
earnings.
How do the earnings of Titanic and
Jurassic Park compare?

    a. Write a fraction that compares
       the earnings between Star
       Wars: Episode IV–A New Hope
       to the total earnings from the
       top 10 movies.
                  461/4248


    b. Write a ratio that compares the
       earnings of Titanic to Spider-
       Man.
                   600 to
                   403.7
    c. Write a decimal that compares the earnings of E.T. The Extra-Terrestrial to the total earnings
       from the top 10 movies.

                       0.01


    d. What is the percent of the Titanic and Star wars movies to the total earnings?


                       1061.8/4248.1=25%

				
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