1. When the least common multiple of 8 and 20 is multiplied by the greatest common factor of 8 and 20, what is the result?
|
|
- Bethanie Stevenson
- 7 years ago
- Views:
Transcription
1 Black Equivalent Fractions and LCM 1. When the least common multiple of 8 and 20 is multiplied by the greatest common factor of 8 and 20, what is the result? 2. The sum of three consecutive integers is a multiple of 89 and is a value between 600 and 900. What is the sum of the three integers? 3. How many positive integers less than or equal to 50 are multiples of 3 or 4, but not 5? 4. The house numbers in a housing development are the multiples of four starting at 4 and ending at 120. If metal digits cost 50 cents each, what is the total cost of all of the metal digits that are needed to number the houses in this development? 5. Explain the following statement: When rewriting fractions with a common denominator, the common denominator can be any common multiple of the two original denominators, however, using the least common multiple is the most convenient choice. 6. Multiple Days. For how many days during the year is the day a multiple of the month? 7. What is the least positive multiple of 72 that has exactly 16 positive factors? 8. Count Off. At a school, the children lined up in a long row and counted off. A hat was given to the sixteenth child in line and every sixteenth child after that. A noisemaker was given to the twenty-fourth child and to every twenty-fourth child after that. What were the positions in line of the first three children who received both a hat and a noisemaker? 9. Explain why the least common multiple of any two numbers is divisible by the greatest common factor of the numbers. 10. Unusual Age. My age is a multiple of 7. Next year, it will be a multiple of 5. When will this event occur again? 11. In Their Prime Jonathan is two years younger than his wife Hazel. Their current ages are both prime numbers. Next year Hazel's age will be a multiple of 11, and Jonathan's age will be the product of two consecutive numbers. How old are Jonathan and Hazel now? Remember to explain how you got your answer and show how you know you are right. Extra: Two prime numbers that differ by two (like Jonathan and Hazel's current ages) are called twin primes. They are always separated by a single even number. Find all the twin primes less than 100. Starting with the twin primes 5 and 7, what is the greatest common factor that those single even numbers all share? Explain how you found your answers. 1
2 12. Wooden Legs Wendy builds wooden dollhouse furniture. She uses the same kind of legs to make 3- legged stools and 4-legged tables. She has a supply of 31 legs and wants to use them all to make stools and tables. Find all the possible ways she can use all 31 legs. Explain how you solved the problem and how you know you have found all solutions. Extra: Wendy sells her furniture to the local toy store. She gets $2 for each stool and $3 for each table. Of all the ways you found, which would earn her the most money? 2
3 Solutions 1. The greatest common factor (GCF) of 8 and 20 is 4, and the least common multiple (LCM) of 8 and 20 is 40. Their product is 4 x 40 = 160. Note that 8 x 20 = 160, also. In general, the GCF(a, b) x LCM(a, b) = a x b. 2. There are four multiples of 89 between 600 and 900: 7 x 89 = 623, 8 x 89 = 712, 9 x 89 = 801, and 10 x 89 = 890. The sum of any three consecutive integers is always a multiple of 3. Since 89 is prime and 9 is the only multiple of 3 in our list, the sum of the three consecutive integers can only be 801. Incidentally, the three consecutive integers are 266, 267 and There are 16 multiples of 3 less than 50 and 12 multiples of 4. We have counted the 4 multiples of 12 twice, however, so we must subtract 4. That s = 24 so far. Now we need to exclude any multiples of five we might have counted. Those would be the 3 multiples of 15 (15, 30 and 45) and the 2 multiples of 20 ( 20 and 40). That leaves = 19 integers less than 50 that are multiples of 3 or 4, but not We know that we are numbering houses from 4 through 120, but using only the multiples of four. We could list these out, but let s see if we can count them quickly. Since 4 = 4 x 1 and 120 = 4 x 30, we are working with the first 30 multiples of 4. Unfortunately, some are one-digit integers, others are two-digit integers and still others have three digits. Let s group them accordingly. (It helps to know that 100 is the first three-digit multiple of 4.) 1-digit 2-digit 3-digit 4x1 = 4 4x3 = 12 4x25 = 100 4x2 = 8 4x24 = 96 4x30 = mult = 22 mult = 6 mult. The two one-digit multiples account for a total of two digits; there are 22 two-digit multiples, resulting in 22x2 = 44 digits; and there are six three-digit multiples yielding 6x3 = 18 digits. This is a total of = 64 digits, which will cost 64 x $0.50 = $ Any common multiple will work, however, the LCM is smallest. This makes multiplication easier. 3
4 6. Multiple Days. Ninety times. Consider this on a month-by-month basis. Month Number Number of Multiples We know that 72 = 2 3 x 3 2, which means that there are 4 x 3 = 12 factors. If the multiple of 72 included just one other prime factor different from 2 and 3, it would follow that this multiple m could be represented by m = (2 3 x 3 2 ) x p, and it would have 4 x 3 x 2 = 24 factors. Bringing a new prime factor into the picture creates too many factors for the multiple. Therefore, let s try to multiple (2 3 x 3 2 ) x 2 = 2 4 x 3 2, which has 5 x 3 = 15 factors. This doesn t satisfy our condition, so we re left with trying (2 3 x 3 2 ) x 3 = 2 3 x 3 3, which has 4 x 4 = 16 factors. Our multiple is 2 3 x 3 3 = Count Off. Number 48, 96, and 144 are the first three common multiples of 16 and Since the LCM is a multiple of the two numbers, both numbers are factors of the LCM. The GCF is a factor of both numbers and thus a factor of the LCM. 10. Mult. of In 1 year In 35 years Now 11. To find all the prime numbers between 1 and 100, I could get a hundreds chart with all the numbers that are NOT prime numbers crossed out. Then I started to look at the chart to see what prime numbers would fit the clues. I saw that both ages were prime numbers and Jonathan was two years older than Hazel. So, I needed to find two prime numbers that were two apart. Since there was more than one pair of two prime numbers, I decided to go to the next clue. I saw that next year, Hazel s age had to be a multiple of 11. Then this year, her age would be one year less than that multiple of 11. I did 2 x 11 = 22, and then 22-1 = 21, but 21 is not a prime number. Then I did 3 X 11 = 33, and then 33-1 = 32, but 32 is not a prime number. Then I did 4 X 11 = 44, and then 44-1 = 43, and 43 is a prime number. I decided to make Hazel s age 43, and see if the rest of the clues would work = 41, and 41 is a prime number. So, Jonathan could be 41 years old. The last clue was that next year, Jonathan s age will be the product of two consecutive numbers. If Jonathan was 41 this year, next year he would be x 7 = 42, and 6 and 7 are consecutive numbers. So the last clue worked. Since all the 4
5 clues worked, I know I am right. Extra: I made a chart of all the twin primes, and the number in between them. I looked at the chart I used for the first part to find them. Twin Primes Number between I started with 6 and found 1, 6, 2, and 3 for factors. Since 6 is the biggest factor, I started with 6 to see if it is a factor of all the other numbers. Next is 12, and 6 x 2 = 12. So 6 would work. Next is 18, and 6 x 3 = 18. So 6 would work. Next is 30, and 6 x 5 = 30. So 6 would work. Next is 42, and 6 x 7 = 42. So 6 would work. Next is 60, and 6 x 10 = 60. So 6 would work. Next is 72, and 6 x 12 = 72. So 6 would work. So, the greatest common factor that the even numbers between prime twins above 5 and 7 share is 6. I noticed that up to 10, there were only prime numbers multiplied by 6. There were 2, 3, 5, and 7. But the numbers that weren t prime weren t there. 4, 6, 8, and 9. I don t know why, but it was neat to see that. If you know why will you please tell me? 12. Key: x = incorrect data Tables Stools Combination 1x4=4 31-4=27/3=9 1 table, 9 stools 2x4=8 31-8=23 x 3x4= =19 x 4x4= =15/3=5 4 tables, 5 stools 5x4= =11 x 6x4= =7 x 7x4= =3/3=1 7 tables, 1 stool Explanation: Each table I multiplied by 4 and subtracted the product from 31, if the difference was a multiple of 3, I had an answer. The pattern is that tables go up by 3s because stools have 3 legs and stools go down by 4s because tables have 4 legs. The number of legs go up or down by 12 because 12 is 4x3 (4 legs times 3 legs). The combinations that work have to combine multiples of 4 and 3 to make 31. Extra: The first correct combination of numbers equals $21, the second equals $22 and the third equals $23,making it the largest number. 5
6 (1 table x $3 = $3) + (9 stools x $2 = $18) = $21 (4 tables x $3 = $12) + (5 stools x $2 = $10) = $22 (7 tables x $3 = $21) + (1 stool x $2 = $2) = $23 6
7 Bibliography Information Unit 4 Number Patterns and Fractions Teachers attempted to cite the sources for the problems included in this problem set. In some cases, sources may not have been known. Problems Bibliography Information 1-4, 7 Math Counts ( 6, 8 Collier, C. Patrick. Menu Collection Problems Adapted from Mathematics Teaching in the Middle School. New York: National Council of Teachers of Mathematics, Print. 5 Larson, Boswell, Kanold, and Stiff. Mathematics Concepts and Skills Course 2 Math Log. McDougal Littell, The Math Drexel ( 7
Adding and Subtracting Fractions. 1. The denominator of a fraction names the fraction. It tells you how many equal parts something is divided into.
Tallahassee Community College Adding and Subtracting Fractions Important Ideas:. The denominator of a fraction names the fraction. It tells you how many equal parts something is divided into.. The numerator
More informationBlack Problems - Prime Factorization, Greatest Common Factor and Simplifying Fractions
Black Problems Prime Factorization, Greatest Common Factor and Simplifying Fractions A natural number n, such that n >, can t be written as the sum of two more consecutive odd numbers if and only if n
More informationGreatest Common Factor and Least Common Multiple
Greatest Common Factor and Least Common Multiple Intro In order to understand the concepts of Greatest Common Factor (GCF) and Least Common Multiple (LCM), we need to define two key terms: Multiple: Multiples
More informationPerfect! A proper factor of a number is any factor of the number except the number itself. You can use proper factors to classify numbers.
Black Prime Factorization Perfect! A proper factor of a number is any factor of the number except the number itself. You can use proper factors to classify numbers. A number is abundant if the sum of its
More informationThe GMAT Guru. Prime Factorization: Theory and Practice
. Prime Factorization: Theory and Practice The following is an ecerpt from The GMAT Guru Guide, available eclusively to clients of The GMAT Guru. If you would like more information about GMAT Guru services,
More informationCISC - Curriculum & Instruction Steering Committee. California County Superintendents Educational Services Association
CISC - Curriculum & Instruction Steering Committee California County Superintendents Educational Services Association Primary Content Module IV The Winning EQUATION NUMBER SENSE: Factors of Whole Numbers
More informationNF5-12 Flexibility with Equivalent Fractions and Pages 110 112
NF5- Flexibility with Equivalent Fractions and Pages 0 Lowest Terms STANDARDS preparation for 5.NF.A., 5.NF.A. Goals Students will equivalent fractions using division and reduce fractions to lowest terms.
More informationUnit 1 Number Sense. In this unit, students will study repeating decimals, percents, fractions, decimals, and proportions.
Unit 1 Number Sense In this unit, students will study repeating decimals, percents, fractions, decimals, and proportions. BLM Three Types of Percent Problems (p L-34) is a summary BLM for the material
More informationDay One: Least Common Multiple
Grade Level/Course: 5 th /6 th Grade Math Lesson/Unit Plan Name: Using Prime Factors to find LCM and GCF. Rationale/Lesson Abstract: The objective of this two- part lesson is to give students a clear understanding
More informationAn Introduction to Number Theory Prime Numbers and Their Applications.
East Tennessee State University Digital Commons @ East Tennessee State University Electronic Theses and Dissertations 8-2006 An Introduction to Number Theory Prime Numbers and Their Applications. Crystal
More informationSession 6 Number Theory
Key Terms in This Session Session 6 Number Theory Previously Introduced counting numbers factor factor tree prime number New in This Session composite number greatest common factor least common multiple
More informationCategory 3 Number Theory Meet #1, October, 2000
Category 3 Meet #1, October, 2000 1. For how many positive integral values of n will 168 n be a whole number? 2. What is the greatest integer that will always divide the product of four consecutive integers?
More information3.3 Addition and Subtraction of Rational Numbers
3.3 Addition and Subtraction of Rational Numbers In this section we consider addition and subtraction of both fractions and decimals. We start with addition and subtraction of fractions with the same denominator.
More information+ = has become. has become. Maths in School. Fraction Calculations in School. by Kate Robinson
+ has become 0 Maths in School has become 0 Fraction Calculations in School by Kate Robinson Fractions Calculations in School Contents Introduction p. Simplifying fractions (cancelling down) p. Adding
More information3.1. RATIONAL EXPRESSIONS
3.1. RATIONAL EXPRESSIONS RATIONAL NUMBERS In previous courses you have learned how to operate (do addition, subtraction, multiplication, and division) on rational numbers (fractions). Rational numbers
More informationSession 7 Fractions and Decimals
Key Terms in This Session Session 7 Fractions and Decimals Previously Introduced prime number rational numbers New in This Session period repeating decimal terminating decimal Introduction In this session,
More informationClifton High School Mathematics Summer Workbook Algebra 1
1 Clifton High School Mathematics Summer Workbook Algebra 1 Completion of this summer work is required on the first day of the school year. Date Received: Date Completed: Student Signature: Parent Signature:
More informationChapter 11 Number Theory
Chapter 11 Number Theory Number theory is one of the oldest branches of mathematics. For many years people who studied number theory delighted in its pure nature because there were few practical applications
More informationMATHEMATICS. Y5 Multiplication and Division 5330 Square numbers, prime numbers, factors and multiples. Equipment. MathSphere
MATHEMATICS Y5 Multiplication and Division 5330 Square numbers, prime numbers, factors and multiples Paper, pencil, ruler. Equipment MathSphere 5330 Square numbers, prime numbers, factors and multiples
More informationFactoring Whole Numbers
2.2 Factoring Whole Numbers 2.2 OBJECTIVES 1. Find the factors of a whole number 2. Find the prime factorization for any number 3. Find the greatest common factor (GCF) of two numbers 4. Find the GCF for
More informationPrime Factorization 0.1. Overcoming Math Anxiety
0.1 Prime Factorization 0.1 OBJECTIVES 1. Find the factors of a natural number 2. Determine whether a number is prime, composite, or neither 3. Find the prime factorization for a number 4. Find the GCF
More informationSunny Hills Math Club Decimal Numbers Lesson 4
Are you tired of finding common denominators to add fractions? Are you tired of converting mixed fractions into improper fractions, just to multiply and convert them back? Are you tired of reducing fractions
More informationGrade 7 & 8 Math Circles October 19, 2011 Prime Numbers
1 University of Waterloo Faculty of Mathematics Centre for Education in Mathematics and Computing Grade 7 & 8 Math Circles October 19, 2011 Prime Numbers Factors Definition: A factor of a number is a whole
More informationGrade 6 Math Circles March 10/11, 2015 Prime Time Solutions
Faculty of Mathematics Waterloo, Ontario N2L 3G1 Centre for Education in Mathematics and Computing Lights, Camera, Primes! Grade 6 Math Circles March 10/11, 2015 Prime Time Solutions Today, we re going
More informationWe can express this in decimal notation (in contrast to the underline notation we have been using) as follows: 9081 + 900b + 90c = 9001 + 100c + 10b
In this session, we ll learn how to solve problems related to place value. This is one of the fundamental concepts in arithmetic, something every elementary and middle school mathematics teacher should
More informationPrime Time: Homework Examples from ACE
Prime Time: Homework Examples from ACE Investigation 1: Building on Factors and Multiples, ACE #8, 28 Investigation 2: Common Multiples and Common Factors, ACE #11, 16, 17, 28 Investigation 3: Factorizations:
More informationNumber of Divisors. Terms. Factors, prime factorization, exponents, Materials. Transparencies Activity Sheets Calculators
of Divisors Purpose: Participants will investigate the relationship between the prime-factored form of a number and its total number of factors. Overview: In small groups, participants will generate the
More informationWSMA Decimal Numbers Lesson 4
Thousands Hundreds Tens Ones Decimal Tenths Hundredths Thousandths WSMA Decimal Numbers Lesson 4 Are you tired of finding common denominators to add fractions? Are you tired of converting mixed fractions
More informationFractions. If the top and bottom numbers of a fraction are the same then you have a whole one.
What do fractions mean? Fractions Academic Skills Advice Look at the bottom of the fraction first this tells you how many pieces the shape (or number) has been cut into. Then look at the top of the fraction
More informationLowest Common Multiple and Highest Common Factor
Lowest Common Multiple and Highest Common Factor Multiple: The multiples of a number are its times table If you want to find out if a number is a multiple of another number you just need to divide the
More information17 Greatest Common Factors and Least Common Multiples
17 Greatest Common Factors and Least Common Multiples Consider the following concrete problem: An architect is designing an elegant display room for art museum. One wall is to be covered with large square
More informationSection 4.1 Rules of Exponents
Section 4.1 Rules of Exponents THE MEANING OF THE EXPONENT The exponent is an abbreviation for repeated multiplication. The repeated number is called a factor. x n means n factors of x. The exponent tells
More informationMath Journal HMH Mega Math. itools Number
Lesson 1.1 Algebra Number Patterns CC.3.OA.9 Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. Identify and
More informationMATHS ACTIVITIES FOR REGISTRATION TIME
MATHS ACTIVITIES FOR REGISTRATION TIME At the beginning of the year, pair children as partners. You could match different ability children for support. Target Number Write a target number on the board.
More informationParts and Wholes. In a tangram. 2 small triangles (S) cover a medium triangle (M) 2 small triangles (S) cover a square (SQ)
Parts and Wholes. L P S SQ M In a tangram small triangles (S) cover a medium triangle (M) small triangles (S) cover a square (SQ) L S small triangles (S) cover a parallelogram (P) small triangles (S) cover
More informationIntroduction to Fractions
Section 0.6 Contents: Vocabulary of Fractions A Fraction as division Undefined Values First Rules of Fractions Equivalent Fractions Building Up Fractions VOCABULARY OF FRACTIONS Simplifying Fractions Multiplying
More information3 cups ¾ ½ ¼ 2 cups ¾ ½ ¼. 1 cup ¾ ½ ¼. 1 cup. 1 cup ¾ ½ ¼ ¾ ½ ¼. 1 cup. 1 cup ¾ ½ ¼ ¾ ½ ¼
cups cups cup Fractions are a form of division. When I ask what is / I am asking How big will each part be if I break into equal parts? The answer is. This a fraction. A fraction is part of a whole. The
More informationLesson 4. Factors and Multiples. Objectives
Student Name: Date: Contact Person Name: Phone Number: Lesson 4 Factors and Multiples Objectives Understand what factors and multiples are Write a number as a product of its prime factors Find the greatest
More informationAccentuate the Negative: Homework Examples from ACE
Accentuate the Negative: Homework Examples from ACE Investigation 1: Extending the Number System, ACE #6, 7, 12-15, 47, 49-52 Investigation 2: Adding and Subtracting Rational Numbers, ACE 18-22, 38(a),
More informationPrimes. Name Period Number Theory
Primes Name Period A Prime Number is a whole number whose only factors are 1 and itself. To find all of the prime numbers between 1 and 100, complete the following exercise: 1. Cross out 1 by Shading in
More informationCONTENTS. Please note:
CONTENTS Introduction...iv. Number Systems... 2. Algebraic Expressions.... Factorising...24 4. Solving Linear Equations...8. Solving Quadratic Equations...0 6. Simultaneous Equations.... Long Division
More informationnorth seattle community college
INTRODUCTION TO FRACTIONS If we divide a whole number into equal parts we get a fraction: For example, this circle is divided into quarters. Three quarters, or, of the circle is shaded. DEFINITIONS: The
More information1.5 Greatest Common Factor and Least Common Multiple
1.5 Greatest Common Factor and Least Common Multiple This chapter will conclude with two topics which will be used when working with fractions. Recall that factors of a number are numbers that divide into
More informationThe Euclidean Algorithm
The Euclidean Algorithm A METHOD FOR FINDING THE GREATEST COMMON DIVISOR FOR TWO LARGE NUMBERS To be successful using this method you have got to know how to divide. If this is something that you have
More informationFraction Competency Packet
Fraction Competency Packet Developed by: Nancy Tufo Revised 00: Sharyn Sweeney Student Support Center North Shore Community College To use this booklet, review the glossary, study the examples, then work
More informationIntegers are positive and negative whole numbers, that is they are; {... 3, 2, 1,0,1,2,3...}. The dots mean they continue in that pattern.
INTEGERS Integers are positive and negative whole numbers, that is they are; {... 3, 2, 1,0,1,2,3...}. The dots mean they continue in that pattern. Like all number sets, integers were invented to describe
More information0.8 Rational Expressions and Equations
96 Prerequisites 0.8 Rational Expressions and Equations We now turn our attention to rational expressions - that is, algebraic fractions - and equations which contain them. The reader is encouraged to
More informationHFCC Math Lab Arithmetic - 4. Addition, Subtraction, Multiplication and Division of Mixed Numbers
HFCC Math Lab Arithmetic - Addition, Subtraction, Multiplication and Division of Mixed Numbers Part I: Addition and Subtraction of Mixed Numbers There are two ways of adding and subtracting mixed numbers.
More informationAddition Methods. Methods Jottings Expanded Compact Examples 8 + 7 = 15
Addition Methods Methods Jottings Expanded Compact Examples 8 + 7 = 15 48 + 36 = 84 or: Write the numbers in columns. Adding the tens first: 47 + 76 110 13 123 Adding the units first: 47 + 76 13 110 123
More informationContents. Subtraction (Taking Away)... 6. Multiplication... 7 by a single digit. by a two digit number by 10, 100 or 1000
This booklet outlines the methods we teach pupils for place value, times tables, addition, subtraction, multiplication, division, fractions, decimals, percentages, negative numbers and basic algebra Any
More informationMATH 10034 Fundamental Mathematics IV
MATH 0034 Fundamental Mathematics IV http://www.math.kent.edu/ebooks/0034/funmath4.pdf Department of Mathematical Sciences Kent State University January 2, 2009 ii Contents To the Instructor v Polynomials.
More informationPrime Factorization, Greatest Common Factor (GCF), and Least Common Multiple (LCM)
Prime Factorization, Greatest Common Factor (GCF), and Least Common Multiple (LCM) Definition of a Prime Number A prime number is a whole number greater than 1 AND can only be divided evenly by 1 and itself.
More informationCommon Multiples. List the multiples of 3. The multiples of 3 are 3 1, 3 2, 3 3, 3 4,...
.2 Common Multiples.2 OBJECTIVES 1. Find the least common multiple (LCM) of two numbers 2. Find the least common multiple (LCM) of a group of numbers. Compare the size of two fractions In this chapter,
More informationPre-Algebra Lecture 6
Pre-Algebra Lecture 6 Today we will discuss Decimals and Percentages. Outline: 1. Decimals 2. Ordering Decimals 3. Rounding Decimals 4. Adding and subtracting Decimals 5. Multiplying and Dividing Decimals
More informationUnit 6 Number and Operations in Base Ten: Decimals
Unit 6 Number and Operations in Base Ten: Decimals Introduction Students will extend the place value system to decimals. They will apply their understanding of models for decimals and decimal notation,
More informationMultiplying and Dividing Signed Numbers. Finding the Product of Two Signed Numbers. (a) (3)( 4) ( 4) ( 4) ( 4) 12 (b) (4)( 5) ( 5) ( 5) ( 5) ( 5) 20
SECTION.4 Multiplying and Dividing Signed Numbers.4 OBJECTIVES 1. Multiply signed numbers 2. Use the commutative property of multiplication 3. Use the associative property of multiplication 4. Divide signed
More informationGrade 5 Mathematics Curriculum Guideline Scott Foresman - Addison Wesley 2008. Chapter 1: Place, Value, Adding, and Subtracting
Grade 5 Math Pacing Guide Page 1 of 9 Grade 5 Mathematics Curriculum Guideline Scott Foresman - Addison Wesley 2008 Test Preparation Timeline Recommendation: September - November Chapters 1-5 December
More informationDon t Slow Me Down with that Calculator Cliff Petrak (Teacher Emeritus) Brother Rice H.S. Chicago cpetrak1@hotmail.com
Don t Slow Me Down with that Calculator Cliff Petrak (Teacher Emeritus) Brother Rice H.S. Chicago cpetrak1@hotmail.com In any computation, we have four ideal objectives to meet: 1) Arriving at the correct
More informationIntroduction to Fractions, Equivalent and Simplifying (1-2 days)
Introduction to Fractions, Equivalent and Simplifying (1-2 days) 1. Fraction 2. Numerator 3. Denominator 4. Equivalent 5. Simplest form Real World Examples: 1. Fractions in general, why and where we use
More information47 Numerator Denominator
JH WEEKLIES ISSUE #22 2012-2013 Mathematics Fractions Mathematicians often have to deal with numbers that are not whole numbers (1, 2, 3 etc.). The preferred way to represent these partial numbers (rational
More informationPlaying with Numbers
PLAYING WITH NUMBERS 249 Playing with Numbers CHAPTER 16 16.1 Introduction You have studied various types of numbers such as natural numbers, whole numbers, integers and rational numbers. You have also
More informationIB Math Research Problem
Vincent Chu Block F IB Math Research Problem The product of all factors of 2000 can be found using several methods. One of the methods I employed in the beginning is a primitive one I wrote a computer
More informationWorking with whole numbers
1 CHAPTER 1 Working with whole numbers In this chapter you will revise earlier work on: addition and subtraction without a calculator multiplication and division without a calculator using positive and
More informationLESSON 5 - DECIMALS INTRODUCTION
LESSON 5 - DECIMALS INTRODUCTION Now that we know something about whole numbers and fractions, we will begin working with types of numbers that are extensions of whole numbers and related to fractions.
More information2.6 Exponents and Order of Operations
2.6 Exponents and Order of Operations We begin this section with exponents applied to negative numbers. The idea of applying an exponent to a negative number is identical to that of a positive number (repeated
More informationGreatest Common Factors and Least Common Multiples with Venn Diagrams
Greatest Common Factors and Least Common Multiples with Venn Diagrams Stephanie Kolitsch and Louis Kolitsch The University of Tennessee at Martin Martin, TN 38238 Abstract: In this article the authors
More informationSequential Skills. Strands and Major Topics
Sequential Skills This set of charts lists, by strand, the skills that are assessed, taught, and practiced in the Skills Tutorial program. Each Strand ends with a Mastery Test. You can enter correlating
More informationDecimals and other fractions
Chapter 2 Decimals and other fractions How to deal with the bits and pieces When drugs come from the manufacturer they are in doses to suit most adult patients. However, many of your patients will be very
More informationWritten methods for addition of whole numbers
Stage 1: The empty number line Mathematics written methods at the Spinney Written methods for addition of whole numbers The mental methods that lead to column addition generally involve partitioning, e.g.
More informationSample Fraction Addition and Subtraction Concepts Activities 1 3
Sample Fraction Addition and Subtraction Concepts Activities 1 3 College- and Career-Ready Standard Addressed: Build fractions from unit fractions by applying and extending previous understandings of operations
More informationPercentages. You will need a calculator 20% =
What is a percentage? Percentage just means parts per hundred, for example 20% stands for 20 parts per hundred. 20% is a short way of writing 20 over a hundred. When using a percentage in a calculation
More information3.4 Multiplication and Division of Rational Numbers
3.4 Multiplication and Division of Rational Numbers We now turn our attention to multiplication and division with both fractions and decimals. Consider the multiplication problem: 8 12 2 One approach is
More informationSummary of the Steps for Written Calculation Multiplication 1
Summary of the Steps for Written Calculation Multiplication Steps - lead children through the necessary stages for mastering the traditional column method of short multiplication and begin to prepare them
More informationparent ROADMAP MATHEMATICS SUPPORTING YOUR CHILD IN GRADE THREE
TM parent ROADMAP MATHEMATICS SUPPORTING YOUR CHILD IN GRADE THREE 3 America s schools are working to provide higher quality instruction than ever before. The way we taught students in the past simply
More informationProgress Check 6. Objective To assess students progress on mathematical content through the end of Unit 6. Looking Back: Cumulative Assessment
Progress Check 6 Objective To assess students progress on mathematical content through the end of Unit 6. Looking Back: Cumulative Assessment The Mid-Year Assessment in the Assessment Handbook is a written
More informationPaper 1. Calculator not allowed. Mathematics test. First name. Last name. School. Remember KEY STAGE 3 TIER 4 6
Ma KEY STAGE 3 Mathematics test TIER 4 6 Paper 1 Calculator not allowed First name Last name School 2007 Remember The test is 1 hour long. You must not use a calculator for any question in this test. You
More informationSimplifying Improper Fractions Poster
Simplifying Improper Fractions Poster Congratulations on your purchase of this Really Good Stuff Simplifying Improper Fractions Poster a reference tool showing students how to change improper fractions
More informationA Prime Investigation with 7, 11, and 13
. Objective To investigate the divisibility of 7, 11, and 13, and discover the divisibility characteristics of certain six-digit numbers A c t i v i t y 3 Materials TI-73 calculator A Prime Investigation
More informationGrade 6 Math Circles. Binary and Beyond
Faculty of Mathematics Waterloo, Ontario N2L 3G1 The Decimal System Grade 6 Math Circles October 15/16, 2013 Binary and Beyond The cool reality is that we learn to count in only one of many possible number
More informationREVIEW SHEETS BASIC MATHEMATICS MATH 010
REVIEW SHEETS BASIC MATHEMATICS MATH 010 A Summary of Concepts Needed to be Successful in Mathematics The following sheets list the key concepts that are taught in the specified math course. The sheets
More informationFRACTION WORKSHOP. Example: Equivalent Fractions fractions that have the same numerical value even if they appear to be different.
FRACTION WORKSHOP Parts of a Fraction: Numerator the top of the fraction. Denominator the bottom of the fraction. In the fraction the numerator is 3 and the denominator is 8. Equivalent Fractions: Equivalent
More informationCalculate Highest Common Factors(HCFs) & Least Common Multiples(LCMs) NA1
Calculate Highest Common Factors(HCFs) & Least Common Multiples(LCMs) NA1 What are the multiples of 5? The multiples are in the five times table What are the factors of 90? Each of these is a pair of factors.
More informationTeaching & Learning Plans. Introduction to Equations. Junior Certificate Syllabus
Teaching & Learning Plans Introduction to Equations Junior Certificate Syllabus The Teaching & Learning Plans are structured as follows: Aims outline what the lesson, or series of lessons, hopes to achieve.
More informationparent ROADMAP MATHEMATICS SUPPORTING YOUR CHILD IN KINDERGARTEN
TM parent ROADMAP MATHEMATICS SUPPORTING YOUR CHILD IN KINDERGARTEN K America s schools are working to provide higher quality instruction than ever before. The way we taught students in the past simply
More informationDay 1. Mental Arithmetic Questions. 1. What number is five cubed? 2. A circle has radius r. What is the formula for the area of the circle?
Mental Arithmetic Questions 1. What number is five cubed? KS3 MATHEMATICS 10 4 10 Level 6 Questions Day 1 2. A circle has radius r. What is the formula for the area of the circle? 3. Jenny and Mark share
More information1 ST GRADE COMMON CORE STANDARDS FOR SAXON MATH
1 ST GRADE COMMON CORE STANDARDS FOR SAXON MATH Calendar The following tables show the CCSS focus of The Meeting activities, which appear at the beginning of each numbered lesson and are taught daily,
More informationFRACTIONS OPERATIONS
FRACTIONS OPERATIONS Summary 1. Elements of a fraction... 1. Equivalent fractions... 1. Simplification of a fraction... 4. Rules for adding and subtracting fractions... 5. Multiplication rule for two fractions...
More informationSIMPLIFYING ALGEBRAIC FRACTIONS
Tallahassee Community College 5 SIMPLIFYING ALGEBRAIC FRACTIONS In arithmetic, you learned that a fraction is in simplest form if the Greatest Common Factor (GCF) of the numerator and the denominator is
More informationACT Fraction Rates and Ratios
ACT Fraction Rates and Ratios 1. If five shirts cost $106.25, what is the cost of two shirts? A. $40 B. $85 C. $10 D. $63.75 E. $42.50 2. An old laptop will run for 3.5 hours on its battery. Melina purchased
More informationFractions as Numbers INTENSIVE INTERVENTION. National Center on. at American Institutes for Research
National Center on INTENSIVE INTERVENTION at American Institutes for Research Fractions as Numbers 000 Thomas Jefferson Street, NW Washington, DC 0007 E-mail: NCII@air.org While permission to reprint this
More informationSUNY ECC. ACCUPLACER Preparation Workshop. Algebra Skills
SUNY ECC ACCUPLACER Preparation Workshop Algebra Skills Gail A. Butler Ph.D. Evaluating Algebraic Epressions Substitute the value (#) in place of the letter (variable). Follow order of operations!!! E)
More informationEAP/GWL Rev. 1/2011 Page 1 of 5. Factoring a polynomial is the process of writing it as the product of two or more polynomial factors.
EAP/GWL Rev. 1/2011 Page 1 of 5 Factoring a polynomial is the process of writing it as the product of two or more polynomial factors. Example: Set the factors of a polynomial equation (as opposed to an
More informationALGEBRA. sequence, term, nth term, consecutive, rule, relationship, generate, predict, continue increase, decrease finite, infinite
ALGEBRA Pupils should be taught to: Generate and describe sequences As outcomes, Year 7 pupils should, for example: Use, read and write, spelling correctly: sequence, term, nth term, consecutive, rule,
More informationSolve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. Solve word problems that call for addition of three whole numbers
More information. 0 1 10 2 100 11 1000 3 20 1 2 3 4 5 6 7 8 9
Introduction The purpose of this note is to find and study a method for determining and counting all the positive integer divisors of a positive integer Let N be a given positive integer We say d is a
More informationACTIVITY: Identifying Common Multiples
1.6 Least Common Multiple of two numbers? How can you find the least common multiple 1 ACTIVITY: Identifying Common Work with a partner. Using the first several multiples of each number, copy and complete
More informationMultiplying and Dividing Fractions
Multiplying and Dividing Fractions 1 Overview Fractions and Mixed Numbers Factors and Prime Factorization Simplest Form of a Fraction Multiplying Fractions and Mixed Numbers Dividing Fractions and Mixed
More informationSummary Of Mental Maths Targets EYFS Yr 6. Year 3. Count from 0 in multiples of 4 & 8, 50 & 100. Count back in 100s, 10s, 1s eg.
Autumn 1 Say the number names in order to 10. Read and write from 1 to 20 in numerals and words. Count in steps of 2, 3, and 5 from 0, and in tens from any number, forward and backward. Count from 0 in
More informationBase Conversion written by Cathy Saxton
Base Conversion written by Cathy Saxton 1. Base 10 In base 10, the digits, from right to left, specify the 1 s, 10 s, 100 s, 1000 s, etc. These are powers of 10 (10 x ): 10 0 = 1, 10 1 = 10, 10 2 = 100,
More informationHow we teach calculations in Maths A Parent s Guide
How we teach calculations in Maths A Parent s Guide Belmont Maths Department 2011 1 Contents Introduction...Page 3 Maths at Belmont...Page 4 Addition...Page 5 Subtraction...Page 7 Multiplication...Page
More information