Ratio Predictions

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 =

Use cross multiplication or 'W' method to determine if these ratios are equivalent:

2/3 = 10/15

• no

• yes

There are 44 collies and 56 poodles. Which is the correct ratio for poodles to total number of dogs?

• 156:100

• 44:100

• 56:100

• 56

Which of the following ratios are equivalent?

• 1:3 and 3:1

• 4:6 and 8:6

• 8:7 and 16:12

• 22:14 and 11:7

Which of the following is not a way to compare ratios?

• part to part

• whole to part

• whole to whole

• part to whole

What is the cost of 3 gallons?

• $35

• $8

• $25

• $5

Serena’s book collection contains 25 fiction books and 5 non-fiction books.

What is the ratio of fiction books to total books in Serina’s book collection?

• 25: 5

• 5: 30

• 25: 30

• 5: 25

2 out of every 7 rubber bands in a multi-colored package are green. Which model would you use to determine the number of rubber bands that will be green in a multi-colored package of 28 rubber bands?

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• 
• 
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The ratio of dogs to cats in a pet store is 3:2. Which of the following is an equivalent ratio?

• 4:6

• 9:6

• 6:10

• 6:9