8th Grade Start of the Year Review

Scale Drawings

100

What are scaled drawings?

Same angles, sides are scaled by the same number.

200

What happens when you have a scale copy of 2?

The sides increase by 2 times the starting amount.

300

What happens to the length if you have a scale factor of 1/2?

Side length is half the original length.

400

Your original side length is 10. Your new side length is 25. What is the scale factor?

2.5

500

The original side length is 8. What is the new side length after you scale it by 1/4?

2

Circles

100

What letter represents the Radius?

R

200

How do you find the Circumference?

C = 2 x R x 3.14

C = D x 3.14

300

How do you find the area of a circle?

A = R² x 3.14

400

Find the circumference.

R=2

Use 3.14 for pi 

12.56

500

Find the Area:

R= 3

Use 3.14 for pi

28.26

Proportional Relationships

100

Fill the ?

x     y

1    9

4    36

10   ?

90

200

What is the ?

x     y

2    10

?    15

10   50

3

300

Is the chart Proportional? Why

x     y

0    10

10   20

33   43

No. Just adding 10. Needs to have a Constant of Proportionality. 

400

What is the constant of proportionality?  y= ?

x     y

5    10

7    14

10   20

y = 2 x X

500

What is the constant of proportionality? y= ?

x     y

4    10

10   25

18   45

y = 2.5 x X

Rational Numbers

100

2 + -9¹/₂ = ?

-7 ¹/₂

200

-2 - 8= ?

-10

300

2 ¹/₂ + 4.25 = ?

6.75 or 6 ³/₄

400

-2 x 8 = ? 

-16

500

-5 x -12 = ?

60

About Mr. Leiting

100

What is Mr. Leiting's favorite Football team?

Philadelphia Eagles

200

What is Mr. Leiting's daughter's name?

Norah

300

How many years has Mr. Leiting been teaching?

2 years.

400

What College did Mr. Leiting go to?

UNI

500

How many siblings does Mr. Leiting have?

One brother