1. Express each fraction as a decimal and then find their sum.,,, COURSE 1 LESSON 7-1 1212 1414 1818 1818 0.5 + 0.25 + 0.125 + 0.125 = 1 7-1 Ratios

2. Introduction Chapter 7 Ratios, Proportions, and Percents 7-1 In Chapter 1, you used multiplication and division to solve problems involving decimals. What You’ve Learned In chapter 5, you solved equations with fractions. In Chapter 6, you used multiplication and division to solve problems involving fractions and mixed numbers.

3. Introduction Chapter 7 Ratios, Proportions, and Percents 6-4 In this chapter, you will use multiplication and division to solve problems involving ratios and rates. What You’ll Learn Next You will use ratios to describe proportional situations. You will use proportions to solve problems, including problems involving scale drawings. You will find and estimate percents and use percents to draw circle graphs.

4. COURSE 1 LESSON 7-1 Ratios 7-1 4.1.6 A.4 Explore the use of ratios and proportions in a variety of situations. pg 306-309 pg 96-97 Daily Notetaking Guide Materials: Standards:

5. COURSE 1 LESSON 7-1 Ratios 7-1 In Lesson 7-1 you will learn to compare real-world quantities. What You’ll Learn Why Learn This? In recipes, the amounts if the ingredients are related to each other. You can use ratios to compare these amounts.

6. COURSE 1 LESSON 7-1 Ratios (For help, go to Lesson 4-5.) Vocabulary Review How do you know when a fraction is in simplest form? Check Skills You’ll Need 7-1 A fraction is in simplest form when the numerator and denominator have only a common factor of 1.

7. Ratios COURSE 1 LESSON 7-1 Ratio - is a comparison of two numbers by division Vocabulary: 7-1 Vocabulary Under Division Equivalent Ratio - ratios that name the same numbers

8. Ratios COURSE 1 LESSON 7-1 The table below shows three ways to write a ratio of cups of party mix to cups of pretzels. All three ratios are read “six to two” Quick Check 7-1 WAYS TO WRITE A RATIO STATEMENT IN WORDSWITH A SYMBOLAS A FRACTION 6 cups of party mix to 2 cups of pretzels6 to 26 : 2 6 2

9. During a school trip, there are 3 teachers and 25 students on each bus. Write each ratio in three ways. Ratios COURSE 1 LESSON 7-1 a. teachers to students There are 3 teachers and 25 students. b. students to teachers There are 25 students and 3 teachers. students to teachers 25 to 3 or 25 : 3 or 25 3 teachers to students 3 to 25 or 3 : 25 or 3 25 Quick Check 7-1

10. Ratios COURSE 1 LESSON 7-1 Write two different ratios equivalent to 24 : 8. Two ratios equal to 24 : 8 are 3 : 1 and 12 : 4. Divide each term by 8. 24 : 8 3 : 1 ÷ 8÷ 8÷ 8÷ 8 Divide each term by 2. 24 : 8 12 : 4 ÷ 2÷ 2÷ 2÷ 2 7-1 Quick Check

11. Ratios COURSE 1 LESSON 7-1 Write each ratio in simplest form. a. 121 to 11 In simplest form, the ratio 121 to 11 is 11 to 1. b. 28 : 16 In simplest form, the ratio 28 : 16 is 7 : 4. 121 to 11 11 to 1 ÷ 11 28 : 16 7 : 4 ÷ 4 7-1 Quick Check

12. COURSE 1 LESSON 6-4 Multiplying Mixed Numbers 6-1 A comparison of two quantities by division. What is a ratio? Closure: What are equivalent ratios? Two ratios that name the same quantity.

13. Ratios A drama club has 14 females and 8 males. For questions 1 and 2, write each ratio in three ways. 1.males to females 2.females to males 3. Write two different ratios equivalent to 4 : 8. Write each ratio in simplest form. 4.5.10 : 6 COURSE 1 LESSON 7-1 8 12 2323 5 : 3 8 to 14, 8 : 14, 8 14 14 to 8, 14 : 8, 14 8 Sample answer: 1 : 2; 5 : 10 7-1

14. 6-4 Class Work: Textbook Pg 308-309 1-40 Home Work: Workbook Pg 333 Practice 7-1 Pg 334 Guided Problem Solving 7-1 Dividing Mixed Numbers