Sample Items: Mathematics Grade 8

Look at the sequence below.
2, 6, 18, ___, ___, ___, ___, 4374, . . .

What is the sixth number in the sequence?

1. 54
2. 162
3. 486
4. 1458

/share/assessment_items/xml/items/msa_math_8_001.xml

View scoring information

Look at the expression below.
8 • n - 18 + 6 - 5 • n

Which expression is equivalent to the given expression?

1. 3 (n - 12)
2. 3 (n + 4)
3. 3 (n - 4)
4. 3 (n - 8)

/share/assessment_items/xml/items/msa_math_8_002.xml

View scoring information

The distance between the bases on a baseball diamond is 90 feet, as shown below.

What is the distance (), in feet, between home plate and second base? Round your answer to the nearest whole number.

1. 90
2. 127
3. 135
4. 180

/share/assessment_items/xml/items/msa_math_8_003.xml

View scoring information

The point (3, 4) is plotted on the coordinate plane below.

What are the coordinates of the point after a 90° counterclockwise rotation about the origin followed by a translation 5 units to the left?

1. (-9, 3)
2. (-4, 3)
3. (-1, -3)
4. (1, 3)

/share/assessment_items/xml/items/msa_math_8_004.xml

View scoring information

President Abraham Lincoln was 6 feet 4 inches tall. An artist wants to make a larger-than-life statue of Lincoln using a scale of 1 inch = 2 feet. How tall will the statue be?

1. 12 feet 8 inches
2. 25 feet 4 inches
3. 76 feet
4. 152 feet

/share/assessment_items/xml/items/msa_math_8_005.xml

View scoring information

Carol is re-finishing her kitchen floor. The dimensions of her kitchen floor are shown below.

Note: The figure is not drawn to scale.

What is the area, in square feet, of Carol's kitchen floor? Round your answer to the nearest whole number. Use = 3.14.

1. 89 square feet
2. 325 square feet
3. 349 square feet
4. 350 square feet

/share/assessment_items/xml/items/msa_math_8_006.xml

View scoring information

The earth is approximately 93,000,000 miles from the sun. What is this distance written in scientific notation?

1. 9.3 x 10⁶
2. 93 x 10⁶
3. 93 x 10⁷
4. 9.3 x 10⁷

/share/assessment_items/xml/items/msa_math_8_007.xml

View scoring information

Taylor was earning an income of $1,000 a week. Then his income was reduced by 10%. Two months later, his income increases by 10%. How much is Taylor earning, in dollars, after his income increases?

1. $990
2. $999
3. $1,000
4. $1,100

/share/assessment_items/xml/items/msa_math_8_008.xml

View scoring information

The outcomes for the sum of rolling two number cubes are shown below.

What is the probability of getting a sum of 9 when rolling two number cubes?

/share/assessment_items/xml/items/msa_math_8_009.xml

View scoring information

Alexandra conducted a survey of 50 candles made by several different workers at a candle factory. She determined that 4% of the candles had mistakes. Based on the results of Alexandra's survey, what prediction can she make about the next 500 candles made by these workers at the factory?

1. 4 candles will have mistakes.
2. 20 candles will have mistakes.
3. 40 candles will have mistakes.
4. 200 candles will have mistakes.

/share/assessment_items/xml/items/msa_math_8_010.xml

View scoring information

Joey wants to make a circle graph that displays the data in the table below.

What will be the angle measure, in whole degrees, for the section that represents Station Wagon?

1. 18°
2. 54°
3. 65°
4. 72°

/share/assessment_items/xml/items/msa_math_8_011.xml

View scoring information

Ms. Smith gave a quiz last week. The results for two of her classes are shown on the box-and-whisker plots below.

Which sentence best describes the quiz results?

1. The medians for the two classes are the same.
2. Class A has a smaller range of scores in the upper quartile than Class B.
3. Class A performed better than Class B.
4. The lower extreme of Class B is greater than the lower extreme of Class A.

/share/assessment_items/xml/items/msa_math_8_012.xml

View scoring information

Triangles LMN and RST, shown below, are similar.

What is the length of ?

1. 4 cm
2. 5 cm
3. 6 cm
4. 15 cm

/share/assessment_items/xml/items/msa_math_8_016.xml

View scoring information

Trapezoid LMNQ and trapezoid RTSU, shown below, are similar.

What is the measure, in degrees, of R

1. 30°
2. 45°
3. 135°
4. 150°

/share/assessment_items/xml/items/msa_math_8_017.xml

View scoring information

George has a bag of marbles. Inside the bag are 5 red marbles, 3 green marbles, and 2 blue marbles. He draws out two marbles in a row, without replacement. What is the number of outcomes?

1. 10
2. 20
3. 90
4. 100

/share/assessment_items/xml/items/msa_math_8_019.xml

View scoring information

At Maryland Middle School, there are 9 mathematics classes. If two mathematics classes are selected for a school competition, what is the number of possible outcomes?

1. 8
2. 9
3. 72
4. 81

/share/assessment_items/xml/items/msa_math_8_020.xml

View scoring information

A box contains 5 bags of potato chips, 4 bags of pretzels and 1 bag of corn chips. Andre reaches in the box and randomly picks two bags, one after the other. What is the probability that Andre chooses a bag of potato chips if the first bag was pretzels?

/share/assessment_items/xml/items/msa_math_8_022.xml

View scoring information

Mr. Rosart selects two students from his class to present their book reports. He places the names of each student in a box and randomly picks one at a time. The class has 14 boys and 12 girls. What is the probability that the second name Mr. Rosart picks is a boy, if the first one is a boy also? Round your answer to the nearest percent.

1. 46%
2. 50%
3. 52%
4. 55%

/share/assessment_items/xml/items/msa_math_8_023.xml

View scoring information

Look at the box-and-whisker plots below.

Populations of Countries in South America and Africa
(in millions of people)

(source: www.aneki.com)

What is the approximate difference between the lower and upper quartiles for South America?

1. 170
2. 100
3. 35
4. 30

/share/assessment_items/xml/items/msa_math_8_026.xml

View scoring information

Look at the box-and-whisker plots below.

Populations of Countries in South America and Africa
(in millions of people)

(source: www.aneki.com)

Which statement is accurate based on the box-and-whisker plots?

1. The median population of the countries in Africa is less than the median population of the countries in South America.
2. The country with the greatest population in Africa has a greater population than the country with the greatest population in South America.
3. There are more people in Africa than in South America.
4. The lower quartile population of countries in Africa is greater than the median population of countries in South America. (correct answer)

/share/assessment_items/xml/items/msa_math_8_027.xml

View scoring information

Look at the line on the coordinate plane below.

What is the slope of the line?

/share/assessment_items/xml/items/msa_math_8_015.xml

View scoring information

Parallelograms FGHI and WXYZ are similar.

What is the measure, in inches, of ?

/share/assessment_items/xml/items/msa_math_8_018.xml

View scoring information

There are 12 CD's in a bag — 6 rap music, 3 country music, and 3 rock music. Two CD's are selected from the bag. The first CD is not replaced before making the second selection. What is the total number of possible outcomes?

/share/assessment_items/xml/items/msa_math_8_021.xml

View scoring information

Douglas has a box with 49 paper clips. Of the paper clips, 15 are yellow, 9 are red, 6 are blue, 11 are orange, and 8 are green. Douglas randomly picks 2 paper clips from the box. If the first paper clip is red, what is the probability that the second paper clip is blue?

/share/assessment_items/xml/items/msa_math_8_024.xml

View scoring information

Look at the box-and-whisker plots below.

Populations of Countries in South America and Africa
(in millions of people)

(source: www.aneki.com)

What is the difference in the medians of the two data sets? (Note: 192 should be acceptable.)

/share/assessment_items/xml/items/msa_math_8_028.xml

View scoring information

Justine has 6 blue shirts, 2 red shirts, and 5 green shirts in her closet. On Monday, she randomly chooses a blue shirt. She does not put the blue shirt back in the closet.

Step A

What is the probability that Justine will randomly select a green shirt on Tuesday?

Step B

Use what you know about probability to explain how you determined the probability that Justine will randomly select a green shirt on Tuesday. Use words, numbers, and/or symbols in your explanation.

/share/assessment_items/xml/items/msa_math_8_013.xml

View scoring information

Manny has 5 action DVD's, 4 comedy DVD's, and 7 drama DVD's. A friend borrows one of the drama DVD's. Manny decides to watch one of his remaining DVD's. He randomly picks one to watch.

Step A

What is the probability that Manny chooses an action DVD?

Step B

Use what you know about probability to explain how you determined the probability that Manny will randomly select an action DVD. Use words, numbers, and/or symbols in your explanation.

/share/assessment_items/xml/items/msa_math_8_025.xml

View scoring information

Marty has a bag with 5 yellow candies, 4 blue candies, 7 green candies, and 3 red candies. His friend, Susan, picks a candy without looking.

Step A

What color candy is Susan most likely to pick?

Step B

Explain why your answer is correct.
Use what you know about probability in your explanation.
Use words and/or numbers in your explanation.

/share/assessment_items/xml/items/msa_math_8_029.xml

View scoring information

Cedric is making a scale model of his school. The dimensions of his school and of his model are shown below.

Step A

What is the length, in feet, of side x of the model?

Step B

• Use what you know about similar polygons to justify why your value of side x is correct. Use words, numbers, and/or symbols in your justification.
• If Cedric changes the length of his model from 3 feet to 6 feet, explain how this change will affect the value of side x. Use words, numbers, and/or symbols in your explanation.

/share/assessment_items/xml/items/msa_math_8_014.xml

View scoring information