Game Show

Circles

100

Formula for the circumference of a circle

C = π d

200

formula for area of a circle

A = π r²

300

What is the radius of circle with a diameter of 13 in.?

6.5 in.

400

What is the circumference of a circle with a diameter of 12 m?

37.68 m

500

What is the area of circle with a diameter of 20 cm?

314 cm²

Multiply and divide

100

250 ÷ 10

25

200

3 x 5.1

15.3

300

17 x 255

4,335

400

3.1 ÷ 0.5

6.2

500

1 2/3 ÷ 3/4

2 2/9

Add and subtract

100

6.96 + 0.4

7.36

200

5.904 - 3.755

2.149

300

7/8 + 3/4

13/8

400

4 5/6 - 4 1/2

1/3

500

8 3/8 - 4 1/2

3 7/8

Areas and Triangles

100

The sum of the angles of any triangle equal this.

180 degrees

200

formula for area of a triangle

A=1/2 b x h

300

Formula for area of rectangle

A = length x width

400

Find the area of a rectangle with a width of 19 in. and a width of 14 in.

266 in²

500

Find the area of a triangle with a base of 15 cm and a height of 12 cm.

90 cm²

Miscellaneous

100

What is place value of the 2 in this number:

35.412

thousandths

200

Solve this proportion:

   m/6 = 5/2

15

300

Write 40% as a reduced fraction.

2/5

400

Write 54.8% as a decimal

0.548

500

Find the selling price of a sweater if the original price was $49.99 and the discount was 15%

$42.49