8th Grade Math STAAR Review

Which one of these math concepts are you crushing this year?

• Pythagorean Theorem

• Volume

• Solving Equations

• Dilations

Tags

CCSS.8.G.A.3

• A

• B

• C

• D

Tags

CCSS.6.NS.C.6C

• F

• G

• H

• J

Answer explanation

When a dilation is an enlargement, the x and y values are multiplied by a number greater than one.

Tags

CCSS.HSG.CO.A.2

What type of Transformation would this Algebraic Representation relate to?

(x, y) ------ (x+3, y-7)

• Dilation

• Rotation

• Translation

• Reflection

Answer explanation

This is a Translation. The pre-image is being moved to the right 3 places, and down 7 places.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How do you know if a Transformation will maintain its congruence?

• The size of the image remains the same.

• The image is enlarged or reduced.

Answer explanation

The ONLY Transformation that does NOT maintain congruence is a dilation because the size changes.

Tags

CCSS.HSG.CO.A.2

• F

• G

• H

• J

Answer explanation

When multiplying the x and y values by a number smaller than one, the image will be a reduction.

Tags

CCSS.HSG.CO.A.2

What would happen to a pre-image if we multiply the x and y values by the number 1?

Like this: (x,y) ------ (1x, 1y)

• The image will be smaller than the pre-image

• The image will be larger than the pre-image

• The image will be congruent to the pre-image

Tags

CCSS.8.G.A.3

To find the volume of a cylinder, use the formula V=Bh.

B stands for finding the area of the base. So, what would be the correct way to find the area of the base of this cylinder?

• $2\pi r$

• $\pi d$

• $\pi r^2$

• $\frac{bh}{2}$

Answer explanation

This is the formula for the area .of a circle. The base of a cylinder is a circle

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

True or False: You should divide 48 mins by 6 miles to find the number of minutes for each mile Joseph runs.

• True

• False

Tags

CCSS.8.EE.B.5

Which answer is the correct choice?

• F- The graph shows the x value (mins) and the y value (miles), so the point (1, 8) on the line is correct.

• G -The graph shows the x value (mins) and the y value (miles), so the point (8,1) on the line is correct.

• H

• J - You should think twice before you choose this answer!

Tags

CCSS.8.EE.B.5