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Illustrative Math-Media4Math Alignment

 

 

Illustrative Math Alignment: Grade 6 Unit 3

Unit Rates and Percentages

Lesson 9: Solving Rate Problems

Use the following Media4Math resources with this Illustrative Math lesson.

Thumbnail Image Title Body Curriculum Nodes
Halloween Math Activities Description

Turn the Halloween season into an opportunity to do some math activities! In this module, you'll find a clever collection of arithmetic, algebra, and geometry activities.

Geometry activity: Watch a video about how spiders build webs and analyze the result geometrically. Students build polygon-based web designs in this hands-on activity. Algebra activity: Going to the pumpkin patch? Use different sized pumpkins on this data-gathering activity, where students measure diameters and circumferences and graph the results.  Arithmetic activity: Two addictive divisibility games based on whack-a-mole.
Applications of Polygons and Applications of Ratios, Proportions, and Percents
Why Do Elephants Have Wrinkled Skin? Description

Have you noticed how wrinkled an elephant's skin is? What purpose does it serve and what does math have to do with explaining this phenomenon? Well, the explanation for an elephant's wrinkled skin is almost entirely a math story. 

In this module students explore rational expressions and functions in the context of the ratio of surface area and volume for various three-dimensional figures. Such figures can be used to model the basic shapes of animals.

This ratio reveals a lot about how an animal is able to retain heat or lose it rapidly, depending on the animal's habitat. The geometry of heat transfer also has applications in architecture and design.

What your students will learn:

Surface Area and Applications of Ratios, Proportions, and Percents
Why Do Rivers Meander? Description

Rivers twist and turn as they make their way to the sea. Why does this happen and how can this be explained mathematically? In this module we look at the geometry of meandering rivers. In the process we'll discover some fascinating numerical relationships.

Students will learn some basic concepts about the geophysics of how rivers form, but they will focus their analysis on what is called the sinuousity ratio. This is the ratio of the straight-line distance of the river and its meandering distance. This ratio reveals important characteristics of the river. Then, students will develop and examine geometric models involving circular arcs and segments to get a better understanding of the ratio. These models will first involve using a compass and straight edge to model a river. This is followed by an algebraic analysis.

Applications of Ratios, Proportions, and Percents
Math Clip Art Math Clip Art Collection: 3D Objects

Overview

This collection aggregates all the math clip art around the topic of 3D Objects. There are a total of 26 images. This collection of resources is made up of downloadable PNG files that you can easily incorporate into a presentation.

 

To download the full set of these resources, click on this link.

 

3-Dimensional Figures, Applications of 3D Geometry, Applications of Polygons, Applications of Ratios, Proportions, and Percents and Proportions
Math Videos Math Video Collection: Video Tutorials Series: Ratios

Overview

This collection aggregates all the math videos and resources in this series: Video Tutorials Series: Ratios. There are a total of 67 resources. This collection of resources is made up of downloadable MP4, transcripts, and other resources files that you can easily incorporate into a presentation.

 

Ratios and Rates, Applications of Ratios, Proportions, and Percents and Proportions
Ratios Collection Math Definitions Collection: Ratios, Proportions, and Percents

Overview

This collection of definitions on the topic of Ratios, Proportions, and Percents from Media4Math is an invaluable educational resource designed to enhance students' understanding of these fundamental mathematical concepts. This comprehensive collection includes essential terms such as ratio, proportion, percent, rate, unit rate, and scale model.

Applications of Ratios, Proportions, and Percents, Ratios and Rates, Percents and Proportions
Math in the News Math in the News Collection: Applications of Ratios

Overview

This is a collection of Math in the News stories that focus on the topic of Ratios, Proportions, and Percents.

 

 

 
Applications of Ratios, Proportions, and Percents and Proportions
Construction Site Math: Ratios Description

In this real-world application of ratios, students will learn what a ratio is, including ratios with three terms. They will see different ways of writing ratios, including fractions in simplest form. 

a:b     ab     a to b

Two short videos introduce the concept of ratios and each video includes real-world examples of ratios. Then several formative assessments are used to test for understanding.  

Students then look at the application of ratios to the mixing of concrete at a construction site, starting with a video then followed by an assessment.

This lesson can be assigned to individual students or teams of students. The lesson can be completed in about 20 minutes. 

Applications of Ratios, Proportions, and Percents
Applications of Linear Functions: Temperature Conversion Description

Temperature is one of the most important measurements that we deal with on a daily basis. Weather, climate, food preparation, health, and other phenomena involve some type of temperature measure. The two most common units of temperature measure are Fahrenheit and Celsius.

There is a linear function that allows you to convert from one unit to another. In this module, you'll learn about this linear function. In fact, students will learn about this function and its inverse.

The module starts with an analysis of Celsius-to-Fahrenheit data. They look at the functional relationship between the variables and develop a linear model using the Desmos graphing calculator. They analyze the properties of this linear function and look at its graph.

Next, students analyze Fahrenheit-to-Celsius data. They also develop a linear function model using the Desmos graphing calculator.

Applications of Linear Functions and Applications of Ratios, Proportions, and Percents
Applications of Linear Functions: Circumference vs. Diameter Description

As the size of a circle changes, so does the size of the diameter and that of the circumference. In fact, there is a linear relationship between these two measures. This relationship can be modeled with a linear function. In this module students will study this linear function and examine its properties, including the fact that the slope of this function is π itself.

This is a hands-on module in which students will measure the diameters and circumferences of a number of different containers. This data gathering will lead to graphing the data. From that students develop a linear model using the Desmos graphing tool. Students will see that the relationship between circumference and diameter has to do with π. In fact, the slope of the linear function is π itself.

Applications of Ratios, Proportions, and Percents and Applications of Circles
Closed Captioned Video: Algebra Applications: Inequalities, Segment 1: Hybrid Cars Closed Captioned Video: Algebra Applications: Inequalities, 1 Closed Captioned Video: Algebra Applications: Inequalities, Segment 1: Hybrid Cars

With the increasing demand worldwide for cars, the cost of gasoline continues to rise. The need for fuel-efficient cars makes hybrids a current favorite. An examination of the equations and inequalities that involve miles per gallon (mpg) for city and highway traffic reveals important information about hybrid cars and those with gasoline-powered engines. Students use the Graphs and Geometry features of the TI-Nspire.

Applications of Equations and Inequalities and Inequalities
Closed Captioned Video: Algebra Applications: Inequalities, Segment 1: Hybrid Cars Closed Captioned Video: Algebra Applications: Inequalities, 1 Closed Captioned Video: Algebra Applications: Inequalities, Segment 1: Hybrid Cars

With the increasing demand worldwide for cars, the cost of gasoline continues to rise. The need for fuel-efficient cars makes hybrids a current favorite. An examination of the equations and inequalities that involve miles per gallon (mpg) for city and highway traffic reveals important information about hybrid cars and those with gasoline-powered engines. Students use the Graphs and Geometry features of the TI-Nspire.

Applications of Equations and Inequalities and Inequalities
Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River Ratios Closed Captioned Video: Algebra Applications: Variables and Equations, 3 Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River Ratios

Why do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path? Furthermore, what information can the ratio of the river’s length to its straight-line distance tell us? In this segment the geological forces that account for a river’s motion are explained. In the process, the so-called Meander Ratio is explored. Students construct a mathematical model of a meandering river using the TI-Nspire. Having built the model, students then use it to generate data to find the average of many Meander Ratios. The results show that on average the Meander Ratio is equal to pi.

Applications of Equations and Inequalities, Variables and Unknowns, Variable Expressions and Applications of Ratios, Proportions, and Percents
Closed Captioned Video: Counting Strategies Closed Captioned Video: Counting Strategies Closed Captioned Video: Counting Strategies

In this video tutorial, students are shown how to use Skip Counting and Counting On to quickly and accurately count large numbers of items. This video lays the groundwork for developing addition skills.

Counting
Closed Captioned Video: Ratios and Rates: Converting Measurement Units Closed Captioned Video: Ratios and Rates: Converting Measurement Units Closed Captioned Video: Ratios and Rates: Converting Measurement Units

Video Tutorial: Ratios and Rates: Converting Measurement Units. In this video, we show how to use conversion rates to convert from one unit of measurement to another. Students are shown how to create a conversion rate.

Ratios and Rates
Closed Captioned Video: Ratios and Rates: Rates and Slopes of Lines Closed Captioned Video: Ratios and Rates: Rates and Slopes of Lines Closed Captioned Video: Ratios and Rates: Rates and Slopes of Lines

Video Tutorial: Ratios and Rates: Rates and Slopes of Lines. In this video we connect the concept of rate of change for a set of linear data to the concept of slope. We use the slope formula to find the rate of change.

Ratios and Rates
Closed Captioned Video: Ratios and Rates: Rates from Data Closed Captioned Video: Ratios and Rates: Rates from Data Closed Captioned Video: Ratios and Rates: Rates from Data

Video Tutorial: Ratios and Rates: Rates from Data. In this video, we look at linear data sets that can be used to find the rate of change.

Ratios and Rates
Closed Captioned Video: Ratios and Rates: Ratios as Decimals Closed Captioned Video: Ratios and Rates: Ratios as Decimals Closed Captioned Video: Ratios and Rates: Ratios as Decimals

Video Tutorial: Ratios and Rates: Ratios as Decimals. In this video, students explore ratios whose terms are decimals. Students are shown techniques for simplifying these types of ratios in ;the context of solving real-world ratio problems.

Ratios and Rates
Closed Captioned Video: Ratios, Proportions, and Percents: Calculating Percents Closed Captioned Video: Ratios, Proportions, and Percents: Calculating Percents Closed Captioned Video: Ratios, Proportions, and Percents: Calculating Percents

Video Tutorial: Ratios and Percents: Calculating Percents. In this video, students will see the relationship between ratios, proportions, and percents. A percent formula is derived and used to solve several real-world percent problems.

Ratios and Rates
Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps Closed Captioned Video: Ratios: Application of Ratios: Roofs and Ramps

What Are Ratios?

A ratio is the relationship between two or more quantities among a group of items. Let's look at an example.

Ratios and Rates and Applications of Ratios, Proportions, and Percents
Closed Captioned Video: Ratios: Rates Closed Captioned Video: Ratios: Rates Closed Captioned Video: Ratios: Rates

What Are Ratios?

A ratio is the relationship between two or more quantities among a group of items.

Ratios and Rates
Closed Captioned Video: Ratios: Unit Rates Closed Captioned Video: Ratios: Unit Rates Closed Captioned Video: Ratios: Unit Rates

What Are Ratios?

A ratio is the relationship between two or more quantities among a group of items.

Ratios and Rates
Closed Captioned Video: Ratios: Visual Models for Ratios and Percents Closed Captioned Video: Ratios: Visual Models for Ratios and Percents Closed Captioned Video: Ratios: Visual Models for Ratios and Percents

What Are Ratios?

A ratio is the relationship between two or more quantities among a group of items.

Ratios and Rates
Definition--Calculus Topics--Average Rates of Change Definition--Calculus Topics--Average Rates of Change Definition--Calculus Topics--Average Rates of Change

Topic

Calculus

Definition

The average rate of change of a function over an interval is the slope of the secant line connecting the endpoints of that interval on the function's graph.

Description

The average rate of change is a fundamental concept in calculus that bridges the gap between algebra and calculus. It provides insight into how a function's output changes relative to its input over a specific interval. This concept is crucial in various real-world applications, such as calculating average speed, growth rates, or productivity changes.

Calculus Vocabulary
Definition--Calculus Topics--Instantaneous Rate of Change Definition--Calculus Topics--Instantaneous Rate of Change Definition--Calculus Topics--Instantaneous Rate of Change

Topic

Calculus

Definition

The instantaneous rate of change of a function at a point is the limit of the average rate of change as the interval over which it's calculated approaches zero. It is equivalent to the derivative of the function at that point.

Calculus Vocabulary
This is part of a collection of definitions on Financial Literacy. This defines the term exchange rate. Definition--Financial Literacy--Exchange Rate Exchange Rate

Topic

Financial Literacy

Definition

An exchange rate is the rate at which one currency can be exchanged for another, influencing international trade and investment.

Numerical and Algebraic Expressions
Definition--Linear Function Concepts--Rate of Change Definition--Linear Function Concepts--Rate of Change Rate of Change

 

 

Topic

Linear Functions

Definition

Rate of change in a linear function is the ratio of the change in the dependent variable to the change in the independent variable, often represented as the slope m in the equation y = mx + b.

Description

Rate of change is a fundamental concept in understanding linear functions. It describes how one variable changes in relation to another, and is graphically represented by the slope of a line.

Slope
Definition--Ratios, Proportions, and Percents Concepts--Calculating Tax Definition--Ratios, Proportions, and Percents Concepts--Calculating Tax Calculating Tax

Topic

Ratios, Proportions, and Percents

Definition

Calculating tax involves determining the percentage amount to be added to the base price of a product or service.

Description

Calculating tax is a fundamental application of percentages in real-world scenarios. When purchasing goods or services, the total cost is often the sum of the base price and the tax applied. Understanding how to calculate tax is essential for budgeting and financial literacy.

For example, if a product costs $50 and the tax rate is 8%, the tax amount is calculated as 

50 × 0.08 = 4

Therefore, the total cost is 

Applications of Ratios, Proportions, and Percents
Definition--Ratios, Proportions, and Percents Concepts--Calculating Tips Definition--Ratios, Proportions, and Percents Concepts--Calculating Tips Calculating Tips

Topic

Ratios, Proportions, and Percents

Definition

Calculating tips involves determining the amount of money to give as a gratuity based on a percentage of the total bill.

Description

Calculating tips is a common use of percentages in everyday life, particularly in service industries such as dining. Tips are usually calculated as a percentage of the total bill, and understanding how to compute this is important for both customers and service providers. 

For instance, if a meal costs $80 and you want to leave a 15% tip, the tip amount is calculated as 

80 × 0.15 = 12

Applications of Ratios, Proportions, and Percents
Definition--Ratios, Proportions, and Percents Concepts--Converting Units Definition--Ratios, Proportions, and Percents Concepts--Converting Units Converting Units

Topic

Ratios, Proportions, and Percents

Definition

Converting units involves changing a measurement from one unit to another using a conversion factor.

Description

Converting units is essential in various fields such as science, engineering, and everyday life. It involves using ratios and proportions to switch between different measurement systems, such as converting inches to centimeters or gallons to liters.

For example, to convert 5 miles to kilometers, knowing that 1 mile is approximately 1.60934 kilometers, you multiply 

5 × 1.60934 = 8.0467 kilometers

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Dimensional Analysis Definition--Ratios, Proportions, and Percents Concepts--Dimensional Analysis Dimensional Analysis

Topic

Ratios, Proportions, and Percents

Definition

Dimensional analysis is a method used to convert one unit of measurement to another using conversion factors.

Description

Dimensional analysis is a powerful tool in mathematics and science for converting units and solving problems involving measurements. It uses the principle of multiplying by conversion factors to ensure that units cancel out appropriately, leading to the desired unit.

For example, to convert 50 meters per second to kilometers per hour, you use the conversion factors  1 meter = 0.001 kilometers and 1 hour = 3600 seconds: 

Applications of Ratios, Proportions, and Percents
Definition--Ratios, Proportions, and Percents Concepts--Equivalent Ratios Definition--Ratios, Proportions, and Percents Concepts--Equivalent Ratios Equivalent Ratios

Topic

Ratios, Proportions, and Percents

Definition

Equivalent ratios are ratios that express the same relationship between quantities.

Description

Equivalent ratios are fundamental in understanding proportions and scaling in mathematics. They represent the same relationship between quantities, even though the numbers themselves may differ. This concept is crucial in various applications, such as cooking, map reading, and creating models.

For instance, the ratios 2:3 and 4:6 are equivalent because they both simplify to the same ratio when reduced.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Part-to-Part Ratios Definition--Ratios, Proportions, and Percents Concepts--Part-to-Part Ratios Part-to-Part Ratios

Topic

Ratios, Proportions, and Percents

Definition

Part-to-part ratios compare different parts of a whole to each other.

Description

Part-to-part ratios are used to compare different parts of a whole, providing a way to understand the relationship between different components. This type of ratio is essential in fields such as statistics, biology, and economics.

For example, if a class has 10 boys and 15 girls, the part-to-part ratio of boys to girls is 10:15, which simplifies to 2:3.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Part-to-Whole Ratios Definition--Ratios, Proportions, and Percents Concepts--Part-to-Whole Ratios Part-to-Whole Ratios

Topic

Ratios, Proportions, and Percents

Definition

Part-to-whole ratios compare one part of a whole to the entire whole. These ratios are more commonly known as fractions.

Description

Part-to-whole ratios are used to compare a part of a whole to the entire whole, providing insights into the composition of a dataset or population. This type of ratio, more commonly referred to as fractions, is widely used in statistics, finance, and everyday decision-making.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Percent Definition--Ratios, Proportions, and Percents Concepts--Percent Percent

Topic

Ratios, Proportions, and Percents

Definition

A percent is a ratio that compares a number to 100.

Description

Percentages are a fundamental concept in mathematics, representing a ratio out of 100. They are used in various applications, including finance, statistics, and everyday calculations such as discounts and interest rates.

For example, if you score 45 out of 50 on a test, your percentage score is 

(45/50) × 100 = 90%

Percents
Definition--Ratios, Proportions, and Percents Concepts--Percent Decrease Definition--Ratios, Proportions, and Percents Concepts--Percent Decrease Percent Decrease

Topic

Ratios, Proportions, and Percents

Definition

Percent decrease measures the reduction in value expressed as a percentage of the original value.

Description

Percent decrease is used to quantify the reduction in value over time, expressed as a percentage of the original value. It is commonly used in finance, economics, and everyday scenarios such as price reductions and weight loss.

For example, if the price of a jacket drops from $80 to $60, the percent decrease is calculated as 

(80 − 60)/80 × 100 = 25%.

Percents
Definition--Ratios, Proportions, and Percents Concepts--Percent Increase Definition--Ratios, Proportions, and Percents Concepts--Percent Increase Percent Increase

Topic

Ratios, Proportions, and Percents

Definition

Percent increase measures the growth in value expressed as a percentage of the original value.

Description

Percent increase is used to quantify the growth in value over time, expressed as a percentage of the original value. It is commonly used in finance, economics, and everyday scenarios such as salary increases and population growth.

For example, if the price of a stock rises from \$50 to \$75, the percent increase is calculated as 

(75 − 50)/50 × 100 = 50%

Percents
Definition--Ratios, Proportions, and Percents Concepts--Percent of a Number Definition--Ratios, Proportions, and Percents Concepts--Percent of a Number Percent of a Number

Topic

Ratios, Proportions, and Percents

Definition

Percent of a number involves calculating the amount represented by a certain percentage of that number.

Description

Understanding percentages is crucial for working with finances, statistics, and data analysis. For instance, to find 20% of 50, multiply 50 by 0.20, resulting in 10. Likewise, it's important for everyday scenarios, such as calculating discounts during shopping.

Percents
Definition--Ratios, Proportions, and Percents Concepts--Percent of an Unknown Definition--Ratios, Proportions, and Percents Concepts--Percent of an Unknown Percent of an Unknown

Topic

Ratios, Proportions, and Percents

Definition

Percent of an unknown refers to solving for an unknown quantity when given a percentage of that quantity.

Description

Knowing how to find a percentage of an unknown variable is essential for solving equations in algebra. This concept appears in various situations, such as when determining discounts or portions of a total amount.

For instance, if 20% of an unknown number equals 15, you can set up the equation: 

0.20x = 15

Percents
Definition--Ratios, Proportions, and Percents Concepts--Percents as Decimals Definition--Ratios, Proportions, and Percents Concepts--Percents as Decimals Percents as Decimals

Topic

Ratios, Proportions, and Percents

Definition

Percents as decimals involve converting a percentage into its decimal representation.

Description

Converting percents to decimals is a key skill in mathematics, allowing students to perform calculations involving percentages more easily. To convert, divide the percent by 100.

For example, 75% as a decimal is 0.75, calculated by dividing 75 by 100. This conversion is useful in many contexts, such as finance, where calculations are conducted using decimal values. Mastering this concept enables students to approach real-world problems with greater confidence and accuracy.

Percents
Definition--Ratios, Proportions, and Percents Concepts--Proportion Definition--Ratios, Proportions, and Percents Concepts--Proportion Proportion

Topic

Ratios, Proportions, and Percents

Definition

A proportion is an equation that states that two ratios are equal.

Description

Understanding proportions is essential in mathematics, as it is used to solve problems involving ratios and fractions. Proportions are commonly seen in real-world applications such as cooking, map measurements, and scale models.

To illustrate, if there are 2 apples for every 3 oranges, the proportion can be expressed as 2:3. Solving proportions involves finding and solving an equivalent ratio.

Proportions
Definition--Ratios, Proportions, and Percents Concepts--Proportional Definition--Ratios, Proportions, and Percents Concepts--Proportional Proportional

Topic

Ratios, Proportions, and Percents

Definition

Proportional refers to the relationship between two quantities where their ratio is constant.

Description

Proportional relationships are fundamental in mathematics and science, describing how one quantity changes in relation to another. This concept is used in various fields, including physics, economics, and engineering.

For example, if the speed of a car is proportional to the time it travels, doubling the time will double the distance covered. Understanding proportionality helps students solve complex problems and apply mathematical reasoning in real-world situations.

Proportions
Definition--Ratios, Proportions, and Percents Concepts--Rate Definition--Ratios, Proportions, and Percents Concepts--Rate Rate

Topic

Ratios, Proportions, and Percents

Definition

A rate is a ratio that compares two quantities with different units.

Description

Rates are used to compare different quantities, such as speed (miles per hour) or price (cost per item). Understanding rates is essential for interpreting data and making informed decisions in various contexts, such as travel and budgeting.

For instance, if a car travels 60 miles in 2 hours, the rate is 30 miles per hour. Learning about rates helps students analyze real-world situations and apply mathematical reasoning to everyday problems.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratio Definition--Ratios, Proportions, and Percents Concepts--Ratio Ratio

Topic

Ratios, Proportions, and Percents

Definition

A ratio is a comparison of two quantities by division.

Description

Ratios are used to express the relationship between two quantities, providing a way to compare different amounts. They are fundamental in various fields, including mathematics, science, and finance.

For example, the ratio of 4 to 5 can be written as 4:5 or 4/5. Understanding ratios helps students analyze data, solve problems, and make informed decisions in real-world situations.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratios and Fractions Definition--Ratios, Proportions, and Percents Concepts--Ratios and Fractions Ratios and Fractions

Topic

Ratios, Proportions, and Percents

Definition

Ratios and fractions are both ways of comparing quantities, with fractions representing a part of a whole.

Description

Understanding the connection between ratios and fractions is crucial for solving problems involving proportions and scaling. Ratios can be expressed as fractions, providing a way to understand the relationship between quantities. A fraction is a part-whole ratio.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratios and Slope Definition--Ratios, Proportions, and Percents Concepts--Ratios and Slope Ratios and Slope

Topic

Ratios, Proportions, and Percents

Definition

The slope of a line is a ratio that represents the change in y over the change in x.

Description

Understanding the relationship between ratios and slope is essential for interpreting graphs and solving problems in algebra and geometry. The slope is a measure of how steep a line is, calculated as the ratio of the vertical change to the horizontal change between two points.

For example, if a line rises 2 units for every 3 units it runs horizontally, the slope is 2/3. This concept is crucial for understanding linear relationships and analyzing data in various fields.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratios in Simplest Form Definition--Ratios, Proportions, and Percents Concepts--Ratios in Simplest Form Ratios in Simplest Form

Topic

Ratios, Proportions, and Percents

Definition

Ratios in simplest form are ratios that have been reduced to their smallest whole number terms.

Description

Reducing ratios to their simplest form is similar to the process of simplifying fractions, making it easier to compare and interpret data. A ratio is in simplest form when the greatest common divisor of the terms is 1.

For example, the ratio 8:12 simplifies to 2:3 by dividing both terms by their greatest common divisor, 4. This skill is essential for solving problems involving proportions and understanding relationships between quantities.

Applications of Ratios, Proportions, and Percents
Definition--Ratios, Proportions, and Percents Concepts--Ratios with Decimals Definition--Ratios, Proportions, and Percents Concepts--Ratios with Decimals Ratios with Decimals

Topic

Ratios, Proportions, and Percents

Definition

Ratios with decimals involve comparing two quantities where one or both of the quantities are represented as decimal numbers.

Description

Ratios with decimals are crucial in various real-world applications, particularly in financial calculations, engineering, and scientific measurements. For instance, when calculating financial ratios such as the price-to-earnings ratio, decimals are often involved. Understanding how to work with these ratios allows for more precise and meaningful comparisons.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratios with Fractions Definition--Ratios, Proportions, and Percents Concepts--Ratios with Fractions Ratios with Fractions

Topic

Ratios, Proportions, and Percents

Definition

Ratios with fractions compare two quantities where one or both of the quantities are fractions.

Description

Ratios with fractions are essential in various mathematical and real-world contexts, such as cooking, where ingredients are often measured in fractions. Understanding these ratios allows for accurate scaling of recipes or other measurements. For example, if a recipe calls for 1/2 cup of sugar to 1/4 cup of butter, the ratio is 1/2:1/4, which simplifies to 2:1 by multiplying both terms by 4.

Ratios and Rates
Definition--Ratios, Proportions, and Percents Concepts--Ratios with Percents Definition--Ratios, Proportions, and Percents Concepts--Ratios with Percents Ratios with Percents

Topic

Ratios, Proportions, and Percents

Definition

Ratios with percents involve comparing quantities where one or both of the quantities are expressed as percentages.

Description

Ratios with percents are widely used in various fields, including finance, statistics, and everyday life. For example, when comparing interest rates, growth rates, or discount rates, percentages are often used. Understanding these ratios allows for better financial decision-making and data analysis.

Ratios and Rates