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Module 7.1 Lesson 1112.notebook
1
September 21, 2015
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
Module 7.1 Lesson 1112.notebook
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September 21, 2015
Complex Fractions
abcd
= ab
cd
Can be re-written as the division of the two fractions.
Module 7.1 Lesson 1112.notebook
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September 21, 2015
What fraction of an hour is
10 minutes?
15 minutes?
20 minutes?
30 minutes?
45 minutes?
12
3
4567
8
9
10
1211
Module 7.1 Lesson 1112.notebook
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September 21, 2015
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
Module 7.1 Lesson 1112.notebook
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September 21, 2015
A Quick Review:
1 foot = ____ inches
Area of a rectangle =
Module 7.1 Lesson 1112.notebook
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September 21, 2015
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
S.49
Module 7.1 Lesson 1112.notebook
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September 21, 2015
• 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?