7th Grade MATH STAAR Proportional Reasoning

Pamela rode her bike at a constant rate of 0.1 kilometer per minute. Which table represents y, the number of kilometers Pamela rode her bike in x minutes?

• 
• 
• 
• 

Answer explanation

Tags

CCSS.HSF-LE.A.1B

Which answer choice represents a person burning 90 calories by climbing 18 flights of stairs?

• 
• $c\ =\ f\ +\ 5$ , where c represents the number of calories burned and f represents the number of flights of stairs climbed.

• 
• A person who climbs 5 flights of stairs will burn 1 calorie.

Answer explanation

Tags

CCSS.HSF-LE.A.1B

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

• $x\ =\ 4.25\ +\ y$

• $x\ =\ 4.25y$

• $y\ =\ 4.25+x$

• $y=4.25x$

Answer explanation

Tags

CCSS.6.EE.C.9

A worker uses 450 inches of steel wire to make 300 springs of the same size. At this rate how many inches of steel wire are needed to make 1 spring?

• $\frac{1}{3}in$

• $\frac{1}{15}in$

• $\frac{2}{3}in$

• $1\ \frac{1}{2}in$

Answer explanation

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

At a school carnival, tickets can be purchased to participate in different activities. The table shows the total cost for different numbers of tickets. What is the constant of proportionality that relates y, the cost in dollars, to x, the number of tickets purchased?

• 4.00

• 0.25

• 1.00

• 0.10

Answer explanation

Tags

CCSS.7.RP.A.2B

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?

• 0.6

• 48

• 3

• 16

Answer explanation

Tags

CCSS.7.RP.A.2B

The price of a sweater was reduced from $20 to $12. By what percentage was teh price of the sweater reduced?

• 8%

• 80%

• 60%

• 40%

Answer explanation

Tags

CCSS.6.RP.A.3C

Perry traveled at an average speed of 55 miles per hour for 3.5 hours and then traveled at an average speed of 60 miles per hour for 2.5 hours. What was the total distance in miles that Perry traveled during this time?

• 347.5 mi

• 330 mi

• 360 mi

• 342.5 mi

Answer explanation

Tags

CCSS.6.NS.B.3

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?

• 12

• 30

• 45

• 27

Answer explanation

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The price of a video game was reduced from $60 to $45. By what percentage was the price of the video game reduced?

• 15%

• 25%

• 75%

• 40%

Tags

CCSS.6.RP.A.3C