Module 7.1 Lesson 11­12.notebook

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Homework:1.) Lesson 11 Problem Set #1-32.) Lesson 12 Problem Set #1, 23.) CRS due tomorrow

Aim: Ratios of Fractions and Their Unit Rates

Module 7.1, Lessons 11 and 12

DO NOW:

Complete Opening Exercise #1on Page S.45

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Opening Exercises S.45

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Complex Fractions

abcd

= ab

cd

Can be re-written as the division of the two fractions.

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Opening Exercises S.45

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S.45

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What fraction of an hour is 

10 minutes?

15 minutes?

20 minutes?

30 minutes?

45 minutes?

12

3

4567

8

9

10

1211

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S.46

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S.47

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1. Which car can travel further on 1 gallon of gas?

Exercise 1

Blue car: Travels 18 2/5 miles using .8 gallons of gas

Red Car: Travels 17 2/5 miles using .75 gallons of gas

S.50

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A Quick Review:

1 foot = ____ inches

Area of a rectangle =

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Make a plan: Complete the chart to identify the necessary steps in the plan and find a solution.

Example 1: You have decided to remodel your bathroom and put tile on the floor. The bathroom is in the shape of a rectangle and the floor measures 14 feet 8 inches long, 5 feet 6 inches wide. The tile you want to use costs $5 each, and each tile covers 4 2/3 square feet. If you have $100 to spend, do you have enough money to complete the project?

Dimensions of the floor

Square foot of one tile

Cost of one tile

Have $100

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• Why do we use area and not volume?

• Why would 5.6 inches and 14.8 inches be incorrect representations for 5 feet 6 inches and 14 feet 8 inches

• How is the unit rate useful?

• Can I buy 17 2/7 tiles?

Discussion Questions:

• How would rounding to 17 tiles compared to 18 tiles affect the job?

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Closing