8th Grade Math Review-McQueen

Numbers

100

Is pi rational or irrational?

Irrational

200

These types of numbers can be made as a fraction of two integers.

Rational Numbers

300

Write the following number in Scientific Notation:

.00000000865

8.65 x 10^-9

400

Simplify:

x⁵ * x⁷

x¹²

500

What is the square root of 8?

about 2.8

Equations

100

Solve:

x + 4= -9

x= -13

200

Solve:

x/5 + 6 = 16

x = 50

300

Solve:

3x + 4 - 2x = 13

x=9

400

Solve:

4 - 4x=8x - 5x - 10

x=2

500

Solve:

4(x+3) -2=6

x= -1

Geometric Transformations

100

This is also called a slide

Translation

200

Two counter-clockwise rotations turn a shape ______ degrees.

180

300

When an image is reflected over the y-axis, which coordinate stays the same?

The y-coordinate

400

Write the rule for the translation left 5, up 7.

(x-5, y+7)

500

What would be the new coordinates for a point that was rotated 180^o if it started at the coordinate (3, -2)

(-3, 2)

Data

100

What type of table is one way to display frequencies for two different categories collected from a single group of people? 

Two-Way Frequency Table

200

What is a graph of plotted points that show the relationship between two sets of data called? 

Scatter Plot

300

What type of correlation would a scatter plot of age vs hair length have?

No Correlation

400

What is a straight line that best represents the points on a scatterplot called?

Trend Line

500

Name two things that would show a negative correlation on a scatter plot.  

Answers may vary

Formulas

100

What is the Pythagorean Theorem?

a²+b²=c²

200

Using the Pythagorean Theorem, find b if a=3 and c=5

b=4

300

Find the Volume of a cylinder with r=5 cm and h=4 cm. Use 3.14 for pi.

314.16 cm³

400

Find the surface area of a sphere with d=11in.

380.13 in²

500

Find the surface area of a cone with d= 7 mi and a slant height of 15 mi

203.315 mi²