Warm-up Date 01/25/10 Chapter 6 Pre-View Write in simplest form.

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Ratios and Unit Rates.

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Presentation transcript:

Warm-up Date 01/25/10 Chapter 6 Pre-View Write in simplest form.

Goal:  To write and simplify ratios  To find rates and unit rates

…And Why To solve real-world problems involving unit prices, gas mileage, and speed

Key Words: ratio: A comparison of two quantities by division. A ratio can be written in different ways.

Key Words: rate: A ratio that compares quantities in different units. Examples: unit rate:A rate with a denominator of 1. Examples:miles per hour, miles per gallon, cost per ounce

Find each unit rate. a) A skydiver falls 144 ft in 3s. b) A pump moves 42 gal in 7 min. c) A car travels 676 mi in 13 h. d) 20 c of water evaporates in 5 days.

Write each ratio as a fraction in simplest form. After-School Jobs ResponseNumber Have a Job Don’t Have a Job Total A survey asked students whether they had after-school jobs. Write each ratio as a fraction in its simplest form. a) Students with jobs to students without jobs b) Students without jobs to all students surveyed

Write three different ratios for each model. 5 to 35 : 3 4 to 54 : 5

Write each ratio as a fraction is simplest form. a) 36 to 48 b) 60 is to 24 c) 16 out of 12 d) 15 : 27

Did we achieve our goal?  To write and simplify ratios  To find rates and unit rates

Web Site: PhSchool.com Tutor Code: ade-0601 Lesson Quiz Code: ada-0601

 Write today’s goal.  Write today’s assignment.

 Practice 6-1  Reflective Journal