CIRCLES
Simplifying
Equivalent Fractions
Adding/Subtracting Fractions
Multiplying/Dividing Fractions
100

The distance around a circle is its...

What is the circumference?

100

105/9

37/3 (or 12 1/3)

100

3/4 = x/28

21

100

4/5 + 1 3/5

2 2/5

100

2/5 x 5/8

1/4

200

Every point on a circle is the same distance from the ...

What is the center?

200

3 8/5

4 3/5 or 23/5

200

12/100 = x/1000

120

200

8 - 1 2/3

6 1/3

200

3/4 ÷ 2/3

9/8

300

The distance from a circle to its center is its . . . 

radius

300

640/780

32/39

300

7/8 = x/24

21

300

6 4/7 + 5 6/7

12 3/7

300

12 x 122

12

400

Half of a circle is a . . . 

semicircle

400

12/6

2

400

4/5 = x/30

24

400

4 1/6- 2 5/6

1 1/3

400

4/6 x 2/5

4/15

500

A portion of a circle and its interior, bound by an arc and two radii, is a 

sector

500

100/25

4

500

7/30 = x/180

42

500

8/9 - 1/3

5/9

500

1/4 ÷ 7/8

2/7