7th Grade Review

Scale Factor

100

How much was this ratio scaled up?

1:2 -> 7:14

7

200

3 : 5 -> 15 : ?

25

300

4 : 6 -> ? : 9

6

400

How much is this ratio scaled by?

16:20 -> 4:5

1/4

500

True or False: When scaling up a shape by a factor of 3, the area also scales up by 3.

False, it scales up by 9.

+/- Rational Numbers

100

11- (-31)

+42

200

12+ (-5)

+7

300

-13.5 + 2.6

-10.9

400

1/2 - 3/4

-1/4

500

-14/20 + -8/10

-3

Pi in the Sky

100

How many radii make 1 diameter?

2

200

What is the formula for the circumference of a circle?

C = 2 x pi x r

C= d x pi 

300

What's the formula for finding the area of a circle?

A= pi x r²

400

Find the area of a circle with radius 10

314

500

What digit is in the ten-thousandth's place of pi?

5

* + / Rational Numbers

100

(-2) x (-7)

+14

200

-1.1 x 3.3

-3.63

300

85 / (-5)

-17

400

9/10 / (-6/5)

-3/4

500

-1/3 x -6/4

1/2

All About Emily

100

How many sisters does Ms. Sauer have?

1

200

Ms. Sauer has Bachelor of Arts degree in what field?

Mathematics

300

How many cats does Ms. Sauer live with?

Two, Colbie and Violet

400

What year did Ms. Sauer graduate high school?

2017

500

What star sign is Ms. Sauer?

Sagittarius