8th Grade Math STAAR Test Review Insights

This video tutorial covers various eighth-grade mathematics topics, including ordering numbers, converting fractions to decimals, using a number line, calculating with pi, understanding map scales, and interpreting graphs. It also explores the concept of constant proportionality through examples involving a hot air balloon and gift baskets. The tutorial concludes with a final example to reinforce the concept of proportionality.

Which of the following numbers is the smallest?

• 6.1666

• -5.2

• -5.1717

• 5.7445

What is the value of root 33 to four decimal places?

• 6.2831

• 0.34

• 3.1415

• 5.7445

Which value is NOT located between 1 and 6.2831 on the number line?

• 1.09

• 0.34

• 3

• 3.1415

Which of the following is a correct representation of a direct variation?

• y = 2x

• y = x + 2

• y = 1/x

• y = x^2

On a map scale, if 2 inches represent 60 miles, which graph correctly shows this relationship?

• Graph A

• Graph B

• Graph C

• Graph D

If 2 inches on a map represent 60 miles, how many miles would 5 inches represent?

• 75 miles

• 150 miles

• 120 miles

• 300 miles

If a hot air balloon rises at a constant rate, which table correctly shows the relationship between time and height?

• Table D

• Table A

• Table B

• Table C

Nikki can make 4 baskets in half an hour. How many baskets can she make in 5 hours?

• 20 baskets

• 10 baskets

• 80 baskets

• 40 baskets

What is the constant of proportionality if Nikki makes 4 baskets in 0.5 hours?

• 16

• 8

• 4

• 2

If the value of y varies directly with x and when y is 75, x is 0.5, what is the value of y when x is 2.25?

• 112.5

• 75

• 337.5

• 150