Equivalent Ratios and Comparing Ratios

How many ways can you write a ratio

• 1

• 3

• 2

• 4

What is a Ratio?

• Is a relationship of two or more numbers by division

• To multiply two fractions

• two ratios that are equivalent

• comparing numbers using > , < , or =

When determining if two ratios are equivalent you can

• cross multiply the numbers to see if you get the same answer

• ask a neighbor

• skip the problem

• guess on the answer

Jane is comparing the number of boys in the class to the number of  girls.  There are 15 boys and 10 girls.  What is the correct way to express this in ratio form?

• 5/10 ; 5:10; 5 to 10

• 10/15;10 to 15; or 10 to 15

• 15 boys/10 girls; 15 boys:10 girls; 15 boys to 10 girls

What is the ratio of stars to circles?

• stars/circles = 11/5

• stars/circles = 5/11

• circles/stars = 5/11

What is the ratio of 14 hats to 20 accessories?

• hats: accessories = 14:20

• accessories:hats = 20:14

• hats: accessories = 20:14

• Accessories : hats = 14:20

What is the ratio of the green apples to all of the apples?

• 4 green to 3 red apples

• 3 green to 4 red apples

• 3 green to 7 apples

• 7 apples to 3 green 

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples

What is the ratio of butter to flour

• 4 butter to 1 flour

• 2 eggs to 1 butter

• 1 butter to 4 flour

• 4 milk to 11 total ingredients

What is the ratio of milk AND eggs to the total ingredients

• 6 milk and eggs to 4 total ingredients

• 6 milk and eggs to 11 total ingredients

• 11 total ingredients to 6 milk and eggs 

• 4 milk and eggs to 2 eggs