STAAR 8th Grade Math Practice Test

Parallelogram XVUW was translated 6 units to the right and 7 units down on a coordinate grid to create parallelogram X’V’U’W’. Which of the following rules describes this transformation?

Which of the following shows y as a function of x?

An earth globe shaped like a sphere has a diameter of 25.5 cm. Which of the following represents the approximate volume of the globe in cubic centimeters?

A customer wants to borrow $15,000 to renovate his home. Which of the following loan options allows the customer to pay the minimum amount of interest?

Which of the following table does not show the proportional relationship between x and y?

Consider the triangle FGH shown below:

Triangle FGH will undergo dilation with a scale factor of n, using the origin as the center of dilation, resulting in the creation of triangle F’G’H’. Which of the following ordered pair best represents the position of point G’?

Alan invested $9,000 in a company savings account that pays 5.75% annual simple interest. There will be no further deposits or withdrawals made.

Which amount is the nearest approximation of the interest received on the account at the end of 12 years?

A bakery has two cake display refrigerators for cakes.

• Display refrigerator A has 50 cakes.
• Display refrigerator B has 20 cakes.
• From display refrigerator A, we move groups of 3 cakes to the display refrigerator B until both displays have the same number of cakes.

The equation shown below can be used to find the number of groups that the display refrigerator A moved to display refrigerator B so that both displays had the same number of cakes:

50 – 3x = 20 + 3x

How many groups did display refrigerator A move to display refrigerator B?

A savings account currently holds $1000. The balance in the account will increase at a constant rate of $50 per month.

Which function can be used to find B, the total balance in the account after m months?

The scatterplot shows how much time it takes to heat the water at different temperatures.

Based on the scatterplot, which is the best prediction of the heating time in minutes with a water temperature 110°C?

Which of the following transformations applied to a figure on a coordinate grid does not maintain congruency?

An individual bought notebooks at a cost of $5 each. Also, he had a $1-off coupon to use toward the total cost of the notebooks bought.

Which table shows the relationship between x, the number of notebooks bought by the person, and y, the total cost of the notebooks?

If the diameter of a cylinder is 8.5 cm, and the height is 12.5 cm, then which equation represents the volume V of the cylinder?

Consider the table below that shows the diagonal lengths of the cardboards in a shop.

Which cardboard has the largest diagonal length in inches?

Consider the diagram below that shows the height of a conical birthday cap.

The cone has a volume of 675π cubic cm. What is the approximate radius of the cone in cm?

Which of the following set of ordered pairs represents y as a function of x?

The graph of a linear function passes through the points (-2,- \frac{1}{2} ) and (2,- \frac{3}{2} ).

Which of the following equations represents the function?

The volume of a tank is 5,991,000 square centimeters. How is this number of square centimeters written in scientific notation?

Consider the dimensions of a rectangular prism as shown below:

What is the total surface area of the prism, in square cm? Enter in just the number, no “cm”.

Jos deposits $2,350 into each of two savings bank accounts.

• Account X gives 3.25% simple interest annually.
• Account Y gives 3.75% interest compounded annually.

If no additional deposits or withdrawals were made by Jos, then which amount is nearest to the difference between the interest Jos will earn in Account X and the interest Jos will earn in Account Y at the end of 3 years?

Consider the graph of a linear function as shown below:

What is the y-intercept of the graph of the function?

Consider the table below that shows the dimensions of three cones.

Which two cones have equal total surface area in square meters?

An engineer solved the equation x² = 140 to find the diagonal’s length of a square cardboard in centimeters. Which of the following represents the approximate length of the diagonal of the square, in centimeters?

Consider the illustration below:

If AB represents the height of the building, and C represents the point on the ground, then what is the distance between point C and foot of the building B?

Consider the graph below that shows the relationship between x and y.

Which of the following statements is true?

Consider the coordinate grid below, which shows (AB).

Which of the following is the approximate length of (AB) in units?

Consider a rectangle PQRS with the dimensions given in units as shown below:

If the length of (PQ) is greater than the length of (PS), then which of the following inequality represents this situation?

Consider the graph of a linear function shown below on the coordinate grid:

What is the slope of the graph of this linear function in decimal form?

Which of the following lists shows the arrangement of numbers from least to greatest?

√66, -8.25, 82%, \frac{-25}{3}

Consider the rule (x, y) → (y, –x). Using this rule, a figure is transformed on a coordinate grid. Which of the following describes the transformation?