Ch 40: Ratios, Proportion, Exponents & Scientific Notation
About This Chapter
Ratios, Proportion, Exponents and Scientific Notation - Chapter Summary
The text and video lessons in this chapter will explain the fundamentals of ratios, proportion, exponents and scientific notation. Learn the characteristics of rational numbers, discover how numbers are written utilizing scientific notation, and explore applications for ratios and proportions in the real world. Several examples are included in order to help you perfect your problem-solving techniques. Study the lessons so that you may:
- Identify rational numbers and write them as fractions
- Understand the relationship between proportions and ratios
- Change percents to decimals and fractions
- Interpret and write exponents
- Change numbers to scientific notation
For your benefit, the lessons are short and provide the above information so that it's easily absorbed. Learn visually by watching the video lessons, which last about ten minutes. With one click you can play and pause the videos. Jump from one main topic to the next when you use the video tags. This flexibility will allow you to skim over familiar subjects or further explore concepts that you need to study more intensively. You can read over the text lessons, which also contain quizzes and links to similar topics.
1. What are Rational Numbers? - Definition & Examples
In this lesson, we will learn about rational numbers and their characteristics. We'll discover what they are, what they aren't and how to distinguish them from other types of numbers.
2. Ratios and Proportions: Definition and Examples
Watch this video lesson to learn how ratios and proportions are related. Also, learn how ratios and proportions are used in real life and how you can apply them to yours.
3. Percents: Definition, Application & Examples
Maybe you know that 95% is an A and 75% is a C. But what do those percents really mean? In this lesson, we'll learn about percents, including how to convert them to fractions and decimals.
4. What Are Exponents? - Definition, Properties & Rules
Exponents are the mathematical shorthand that tells us to multiply the same number by itself for a specified number of times. This lesson will not only explain how the exponent works but also discuss the seven distinct properties, or rules, that govern its use.
5. Converting Numbers to Scientific Notation
After watching this video lesson, you will be able to convert any number you come across into scientific notation. You will also learn why scientific notation is used and where you are most likely to see it.
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Other Chapters
Other chapters within the Ohio Assessments for Educators - Elementary Education (018/019): Practice & Study Guide course
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- Teaching Phonics, Word Analysis, Spelling & Fluency
- Reading Comprehension & Vocabulary Skills
- Understanding Literary Texts
- Structure & Literary Devices in Prose
- Informational, Expository & Technical Texts
- Understanding & Teaching Persuasive Texts
- Graphic Communication
- Processes & Modes of Written Communication
- Reference Materials & Proofreading in Writing
- Conventions of Standard American English
- Processes & Conventions of Verbal Communication
- Effective Writing & Speaking
- Basic Concepts of Government & Economics
- Forms & Characteristics of Government
- International Relationships & Foreign Policy
- Principles of U.S. Citizenship
- Functions of Economic Systems & Free Markets
- Characteristics of Ancient Civilizations
- Global Effects of Exploration, Trade & Revolution
- Major U.S. & World Conflicts
- Modern World History
- Historical Analysis of Fact vs. Opinion
- Geography, Physical Sciences & Cultural Anthropology
- Reading & Understanding Maps
- Social Science Research & Experimentation
- Scientific Method, Inquiry & Data Analysis
- Life & Zoological Sciences
- Plants, Biomes & Genetics
- Physical, Earth & Space Sciences
- Components of the Solar System & Universe
- Weather, Climate & Geologic Systems
- Numeration, Number Sense, & Mathematical Operations
- Mixed Numbers & Fractions
- Arithmetic & Estimation Using Decimals
- Rounding & Estimating Numbers
- Place Values, Ordering Fractions & Decimals
- Prime Numbers, Composite Numbers & Divisibility Rules
- The Least Common Multiple & Greatest Common Factor
- Mathematical Reasoning for Solving Word Problems
- Tools for Representing Mathematical Concepts
- Calculating & Interpreting Statistical Data
- Algebraic Patterns, Equations & Functions
- Properties of Geometric Shapes
- Converting & Graphing Units of Measurement
- Area, Perimeter & Volume of Geometric Shapes
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- Ohio Assessments for Educators Elementary Education Flashcards
