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Pre-Algebra Essentials For Dummies (9781119590866) was previously published as Pre-Algebra Essentials For Dummies (9780470618387). While this version features a new Dummies cover and design, the content is the same as the prior release and should not be considered a new or updated product. Many students worry about starting algebra. Pre-Algebra Essentials For Dummies provides an overview of critical pre-algebra concepts to help new algebra students (and their parents) take the next step without fear. Free of ramp-up material, Pre-Algebra Essentials For Dummies contains content focused on key topics only. It provides discrete explanations of critical concepts taught in a typical pre-algebra course, from fractions, decimals, and percents to scientific notation and simple variable equations. This guide is also a perfect reference for parents who need to review critical pre-algebra concepts as they help students with homework assignments, as well as for adult learners headed back into the classroom who just need to a refresher of the core concepts. The Essentials For Dummies Series Dummies is proud to present our new series, The Essentials For Dummies. Now students who are prepping for exams, preparing to study new material, or who just need a refresher can have a concise, easy-to-understand review guide that covers an entire course by concentrating solely on the most important concepts. From algebra and chemistry to grammar and Spanish, our expert authors focus on the skills students most need to succeed in a subject.
Autorentext
Mark Zegarelli is a math tutor and author of several books, including Basic Math & Pre-Algebra For Dummies.
Klappentext
Concise coverage of key topics Your practical primer on pre-algebra This useful and friendly guide focuses on critical concepts taught in a typical pre-algebra course from fractions, decimals, and percents to standard formulas and simple variable equations. Learn how to turn words into numbers and use "x" in algebraic equations to solve word problems. Get the lowdown on the essential formulas you need to solve for perimeter, area, surface area, and volume. Pre-Algebra Essentials For Dummies is perfect for cramming, homework help, or as a reference for parents and tutors helping students study for exams. Inside...
Zusammenfassung
Pre-Algebra Essentials For Dummies (9781119590866) was previously published as Pre-Algebra Essentials For Dummies (9780470618387). While this version features a new Dummies cover and design, the content is the same as the prior release and should not be considered a new or updated product.
Many students worry about starting algebra. Pre-Algebra Essentials For Dummies provides an overview of critical pre-algebra concepts to help new algebra students (and their parents) take the next step without fear. Free of ramp-up material, Pre-Algebra Essentials For Dummies contains content focused on key topics only. It provides discrete explanations of critical concepts taught in a typical pre-algebra course, from fractions, decimals, and percents to scientific notation and simple variable equations. This guide is also a perfect reference for parents who need to review critical pre-algebra concepts as they help students with homework assignments, as well as for adult learners headed back into the classroom who just need to a refresher of the core concepts.
The Essentials For Dummies Series
Dummies is proud to present our new series, The Essentials For Dummies. Now students who are prepping for exams, preparing to study new material, or who just need a refresher can have a concise, easy-to-understand review guide that covers an entire course by concentrating solely on the most important concepts. From algebra and chemistry to grammar and Spanish, our expert authors focus on the skills students most need to succeed in a subject.
Inhalt
Introduction 1
About This Book 1
Conventions Used in This Book 2
Foolish Assumptions 2
Icons Used in This Book 3
Where to Go from Here 3
Chapter 1: Arming Yourself with Math Basics 5
Understanding Sets of Numbers 5
The Big Four Operations 6
Adding things up 6
Take it away: Subtracting 7
Multiplying 7
Doing division lickety-split 8
Fun and Useful Properties of the Big Four Operations 9
Inverse operations 9
Commutative operations 9
Associative operations 10
Distributing to lighten the load 10
Other Operations: Exponents, Square Roots, and Absolute Values 11
Understanding exponents 11
Discovering your roots 12
Figuring out absolute value 12
Finding Factors 13
Generating factors 13
Finding the greatest common factor (GCF) 14
Finding Multiples 14
Generating multiples 14
Finding the least common multiple (LCM) 15
Chapter 2: Evaluating Arithmetic Expressions 17
The Three E's: Equations, Expressions, and Evaluations 18
Equality for all: Equations 18
Hey, it's just an expression 19
Evaluating the situation 19
Putting the Three E's together 19
Following the Order of Operations 20
Order of operations and the Big Four expressions 21
Order of operations in expressions with exponents 24
Order of operations in expressions with parentheses 25
Chapter 3: Say What? Making Sense of Word Problems 29
Handling Basic Word Problems 30
Turning word problems into word equations 30
Plugging in numbers for words 33
Solving More-Challenging Word Problems 34
When numbers get serious 35
Lots of information 36
Putting it all together 37
Chapter 4: Figuring Out Fractions 41
Reducing Fractions to Lowest Terms 42
Multiplying and Dividing Fractions 42
Multiplying numerators and denominators straight across 42
Doing a flip to divide fractions 43
Adding Fractions 43
Finding the sum of fractions with the same denominator 44
Adding fractions with different denominators 45
Subtracting Fractions 47
Subtracting fractions with the same denominator 47
Subtracting fractions with different denominators 47
Working with Mixed Numbers 48
Converting between improper fractions and mixed numbers 49
Multiplying and dividing mixed numbers 50
Adding and subtracting mixed numbers 50
Chapter 5: Deciphering Decimals 57
Performing the Big Four Operations with Decimals 57
Adding decimals 58
Subtracting decimals 59
Multiplying decimals 59
Dividing decimals 61
Converting between Decimals and Fractions 63
Changing decimals to fractions 64
Changing fractions to decimals 66
Chapter 6: Puzzling Out Percents 69
Understanding Percents Greater than 100% 70
Converting to and from Percents, Decimals, and Fractions 70
Going from percents to decimals 71
Changing decimals into percents 71
Switching from percents to fractions 71
Turning fractions into percents 72
Solving Percent Problems 73
Figuring out simple percent problems 74
Deciphering more-difficult percent problems 75
Applying Percent Problems 76
Identifying the three types of percent problems 76
Introducing the percent circle 77
Chapter 7: Fraction, Decimal, and Percent Word Problems 83
Adding and Subtracting Parts of the Whole 83 Sharing a pizza: ...