Finding Unit Rates with Ratios of Fractions

Mrs. Bibo introduces unit rates involving ratios of fractions, building on sixth-grade concepts. The lesson covers key vocabulary, such as ratios, rates, and unit rates, and explains how to divide fractions using the Keep Change Flip method. Three examples are provided: grading tests, using cleaning solution, and calculating running speed, each demonstrating how to find unit rates with fractions.

What is the main focus of today's lesson?

• Understanding whole numbers

• Learning about unit rates involving ratios of fractions

• Exploring geometric shapes

• Studying algebraic expressions

How can a ratio be written?

• All of the above

• Using a colon

• As a fraction

• Using the word 'to'

What distinguishes a rate from a ratio?

• A rate does not involve division

• A rate involves different units

• A rate is always a whole number

• A rate is always a fraction

What is a unit rate?

• A ratio with no units

• A rate with a numerator of one

• A rate with a denominator of one

• A fraction with different units

What is the first step in dividing fractions?

• Multiply the fractions

• Keep the first fraction the same

• Flip the first fraction

• Change the division to addition

What is the process called for dividing fractions?

• Add-Subtract-Multiply

• Keep-Change-Flip

• Flip-Keep-Change

• Multiply-Divide-Add

In Example 1, what is the first step after setting up the problem?

• Convert the whole number to a fraction

• Add the fractions

• Subtract the fractions

• Multiply the fractions

How do you convert a mixed number to an improper fraction?

• Multiply the denominator by the whole number and add the numerator

• Add the numerator and denominator

• Divide the numerator by the denominator

• Subtract the numerator from the denominator

In Example 2, what is the final fraction of the bottle needed to clean the entire bathroom?

• 1/3

• 2/3

• 5/9

• 3/5

What is the average speed in miles per hour in Example 3?

• 9 miles per hour

• 9 and a half miles per hour

• 10 miles per hour

• 8 miles per hour