Grade 7 STAAR math (2018)

A recipe says to use 3 cups of flour to make 48 cookies. What is the constant of proportionality that relates the number of cookies made, y, to the number of cups of flour used, x?

• A) 0.6

• B) 48

• C) 3

• D) 16

An observatory is shaped like a cylinder standing on one of its bases with a dome on top. The diameter of the floor of the observatory is 64 feet, as shown in the diagram.

Which measurement is closest to the circumference of the base of the observatory in feet?

• 200.96 ft

• 3,215.36 ft

• 100.48 ft

• 401.92 ft

A classroom is arranged with 8 seats in the front row, 10 seats in the middle row, and 12 seats in the back row. The teacher randomly assigns seats to students as they enter the classroom.

What is the probability that the first student who enters the classroom will be assigned a seat in the front row?

• 2/5

• 2/3

• 4/11

• 4/15

Quadrilateral KLMN is similar to quadrilateral WXYZ. Which statement about these quadrilaterals must be true?

• Angle NKL is congruent to angle ZWX

• Angle NKL is congruent to angle XYZ

Cheddar cheese costs $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?

• x = 4.25 + y

• x = 4.25y

• y = 4.25 + x

• y = 4.25x

Ursula surveyed 50 classmates about their favorite ice cream flavors. Each classmate chose one flavor. The results are shown in the circle graph.

How many more of Ursula's classmates chose chocolate than chose vanilla?

• 8

• 6

• 34

• 16

Jack tossed a coin three times. Which tree diagram shows all the possible outcomes of the coin landing heads up or tails up?

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The ratio of boys to girls in Ms. Cunningham's class is 2 to 3. There are 18 girls in the class.

What is the total number of students in Ms. Cunningham's class?

• A) 12

• B) 30

• C) 45

• D) 27

The dimensions of a triangular prism are shown in the diagram. What is the volume of the triangular prism in cubic centimeters?

• 1,360 cm³

• 408 cm³

• 1,632 cm³

• 816 cm³

The table shows the relationship between y, the cost to rent a boat, and x, the amount of time the boat is rented. Which graph best represents the relationship between x and y shown in the table?

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