PPT-RATES, RATIOS and PROPORTIONS

RATIOS A ratio compares the magnitude size of two quantities There are two types of ratios partpart and partwhole RATIOS A ratio compares the magnitude size of two quantities There are two types of ratios partpart and partwhole. Ratios ratios are one number expressed in relation to another by dividing the one number by the other For example the sex ratio of Delaware in 1990 was 343200 females to 322968 males or 106 This can easily be expressed in terms of males to females 9 5. : Ratios, Rates & Proportions . Section . 4. Solving Proportions. California Standards. Number Sense 1.2: Interpret and use ratios in different contexts.. Number Sense 1.3: Use proportions to solve problems. Use Cross-Multiplication as a method for solving such problems.. An introduction. Ratios express . relationships. 1 dozen eggs . $2.50. 2 cups of flour. 1 cake. This expresses the relationship that 1 dozen eggs cost $2.50. . This expresses the relationship that 2 cups of flour are needed to make 1 cake. Outline:. Ratios!. What is a Ratio? . How to Use Ratios? . How to Simplify?. . Proportions!. What is a proportion?. Properties of proportions?. How to use proportions? . Mysterious Problems…. Ratios. A . ratio. is a comparison of . two. numbers.. Example: Tamara has 2 dogs and 8 fish. The ratio of dogs to fish can be written in three different ways. ..  .  . ***. Be careful with the . UNIT 6. Math 7 Plus. So far we have looked at the following ways to use ratios to find unit rates as well as to help us find other equivalent ratios. . GRAPHING IN A COORDINATE PLANE. Best used to make predictions about equivalent ratios. Ratios. A . ratio. is a comparison of . two. numbers.. Example: Tamara has 2 dogs and 8 fish. The ratio of dogs to fish can be written in three different ways. ..  .  . ***. Be careful with the . 3/28/17. How do we write ratios?. How do we write and simplify rates?. How do we decide whether two ratios/rates are proportional?. Today We’ll Discuss. Definition:. The . ratio. of two numbers . Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. Chapter Five: Ratios and Proportions. Lesson 5.2: Proportions. Ratios and Rates. Objective:. Learn to find Equivalent Ratios and Rates. . Equivalent Ratios and Rates. You can find equivalent ratios and rates the same way as you find equivalent fractions- by multiplying or dividing both parts of the ratio or rate by the same number.. John Barker & Jennifer Thomas. Nevada Math Project. March 2015. Big Ideas. Ratio – A ratio is used to measure two different things in two different units.. Ex. How far a car drives with how long it takes to get to the destination. . KWL – . Ratios and Rates. What you Know Want to learn What you learned. Chapter . 1 . Notes. Chapter . 1 . Notes. Ch. . 1 . EQs. Lesson 1: . How does finding the GCF help you to solve real-world problems? . Quiz 6A. . A comparison of two numbers by division. Ratio. . A comparison of two quantities that have different kinds of units. Rate. . A rate in which the second quantity is 1.. Unit Rate. . Ratios, Rates, Unit Rates, & Conversion Factors. Proportion – Learning Outcomes Express quantities as proportions of each other using fractions, decimals, ratios, and percentages. Divide quantities into a given proportion. Express errors as a proportion.