Circles and Ratios

Ratioword problems

100

There are 5 red marbles and 6 blue marbles in a bag. What is the Ratio of the number of red marbles to the total number of marbles?

5:11

200

There are 12 old ribbons and 13 new ribbons. What is the ratio of the number of old ribbons to the number of new ribbons?

12:13

300

There are 25 pencils and 45 pens. What is the ratio of the number of pencils to the number of pens? Simplify your answer.

5:9

400

There are 80 green lights and 60 blue lights. What is the ratio of the number of green lights to the number of blue lights? Simplify your answer.

4:3

500

There are 200 gold coins 400 silver coins. What is the ratio of the number of gold coins to the total number of coins? simplify your answer.

1:2

Parts of a circle

100

What is a line that passes through a circle?

The Diameter

200

What is a straight line from the center of a circle to the circumference of a circle?

The radius

300

What is formed when a straight line or chord divides a circle into two unequal parts?

Minor Arc

400

What is the perimeter of a circle?

The circumference

500

What is the bigger arc that connects two points on the edge of a circle?

Major Arc

Simply ratios

100

10:5

5:1

200

25:20

5:4

300

52:2

26:1

400

550:11

50:1

500

55:75

11:15