Mcas Mathematics Test With Answer Key - Grade 7, 2014 Page 13
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17Mathematics
Session 2
Question 18 is an open-response question.
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BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.
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Show all your work (diagrams, tables, or computations) in your Student Answer Booklet.
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If you do the work in your head, explain in writing how you did the work.
Write your answer to question 18 in the space provided in your Student Answer Booklet.
ID:301865 Common
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18
Susan put blue tiles, green tiles, and yellow tiles into a bag. All the tiles are the same size and
shape. Susan will select one tile from the bag without looking, record its color, and then put the
tile back into the bag. She will repeat this experiment 240 times. Based on the number of tiles
of each color in the bag, Susan predicted the results shown in the frequency table below.
Predicted Results
Color of Tile
Frequency
blue
120
green
40
yellow
a. Based on the table, what is the best prediction for the number of times Susan will select
a yellow tile from the bag? Show or explain how you got your answer.
A total of 12 tiles are in the bag.
b. Based on the table, determine the number of blue tiles, the number of green tiles, and
the number of yellow tiles that are in Susan’s bag. Show or explain how you got each of
your answers.
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