MAP Practice Test (8th Grade Math)

On average, the moon is 384,400 kilometers from the Earth. How is this distance written in scientific notation?

• 0.3844 × 10^–6

• 3.844 × 10^–5

• 3.844 × 10⁵

• 0.3844 × 10⁶

Answer explanation

When writing in scientific notation remember that we are always multiplying by a power of 10.

Count how many times you will move the decimal point until you have only one number in the ones place. (or one number in front of the decimal).

Positive (+) exponents make our number larger.

Negative (-) exponents will give us a smaller number like a decimal.

An equation is shown.
 $x^3=125$  

What are all the possible values of x?

• -5 only

• 5 only

• –5 and 5

• 5 and 25

Answer explanation

Plug each answer choice into your calculator and see which one equals 125.

 $5^3=125$  
 $\left(-5\right)^3=-125$  
 $25^3=15,625$  

Which interval is the number shown below located?

 $\sqrt{2}$ 

• Between 0 and 1

• Between 1 and 2

• Between 3 and 4

• Between 5 and 6

Which interval is the number shown below located?

 $\left(\sqrt{3.5}\right)^2$ 

• Between 0 and 1

• Between 1 and 2

• Between 2 and 3

• Between 3 and 4

Which interval is the number shown below located?

 $\sqrt{5}$ 

• Between 0 and 1

• Between 1 and 2

• Between 2 and 3

• Between 3 and 4

Which interval is the number shown below located?

 $\frac{\pi}{2}$ 

• Between 0 and 1

• Between 1 and 2

• Between 2 and 3

• Between 3 and 4

In a science lab, substance X has a mass of 6.10 × 10^–7 grams. The mass of substance Y is twice as much as that of substance X. What is the mass, in grams, of substance Y?

• 1.22 × 10^–5

• 1.22 × 10^–6

• 1.22 × 10^–7

• 1.22 × 10^–8

The systems of equations is shown.
 $y=\frac{2}{3}x-6$  
 $3y-2x=9$  
How many solutions does the system have, and why?

• There are no solutions because the slopes and y-intercepts are the same.

• There are infinitely many solutions because the slopes and y-intercepts are the same.

• There are no solutions because the slopes are the same and the y-intercepts are different.

• There are infinitely many solutions because the slopes are the same and the y-intercepts are different.

Figure 1 is rotated 90° counterclockwise about the origin to form Figure 2.
Select the two statements that are correct.

•  $\overline{AB}\cong\overline{RV}$  

•  $\angle A\cong\angle S$  

•  $\angle C\cong\angle T$  

•  $\overline{BC}\cong\overline{ST}$  

•  $\angle B\cong\angle V$  

Answer explanation

 $\angle$  means angle
 $\cong$  means congruent
 $\overline{AB}$  A line over two points is referring to the line segment AB.

The dance floor at a hotel is in the shape of a square. The area of the ballroom floor is 576 square meters. To find the length, in meters, of each side of the dance floor, Jolie evaluates the expression shown.  $\sqrt{576}$  
What is the length, in meters, of each side of the dance floor?

• 16

• 24

• 144

• 288

Answer explanation

 $\sqrt{576}=24$