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Course 2, Lesson 1-3 Simplify. 1. 2. 3. 4. On her last science test, Maria answered of the questions incorrectly. Write as a fraction in simplest form.

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Presentation on theme: "Course 2, Lesson 1-3 Simplify. 1. 2. 3. 4. On her last science test, Maria answered of the questions incorrectly. Write as a fraction in simplest form."— Presentation transcript:

1 Course 2, Lesson 1-3 Simplify. 1. 2. 3. 4. On her last science test, Maria answered of the questions incorrectly. Write as a fraction in simplest form. 5. Jasmine is making a quilt. She bought yards of fabric. Her total cost was $26. What was the cost per yard?

2 Course 2, Lesson 1-3 Answers: 1. 12 2. 3. 4. 5. $6

3 HOW can you show that two objects are proportional? Ratios and Proportional Relationships Course 2, Lesson 1-3

4 Ratios and Proportional Relationships Course 2, Lesson 1-3 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. 7.RP.2 Recognize and represent proportional relationships between quantities. 7.RP.3 Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error. Mathematical Practices 1Make sense of problems and persevere in solving them. 3Construct viable arguments and critique the reasoning of others. 4 Model with mathematics. 5 Use appropriate tools strategically.

5 To convert one rate to an equivalent rate by multiplying by a unit ratio or its reciprocal. Ratios and Proportional Relationships Course 2, Lesson 1-3

6 Ratios and Proportional Relationships Course 2, Lesson 1-3 unit ratio dimensional analysis

7 How did what you learned today help you answer the HOW can you show that two objects are proportional? Course 2, Lesson 1-3 Ratios and Proportional Relationships

8 How did what you learned today help you answer the HOW can you show that two objects are proportional? Course 2, Lesson 1-3 Ratios and Proportional Relationships Sample answers: By finding unit ratios for customary and metric units of measure By using dimensional analysis when converting rates

9 Explain how your knowledge of unit rates helped you to convert rates using dimensional analysis. Ratios and Proportional Relationships Course 2, Lesson 1-3

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