Fractions As Division
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Elementary Number Theory and Methods of Proof
CHAPTER 4 ELEMENTARY NUMBER THEORY AND METHODS OF PROOF Copyright © Cengage Learning. All rights reserved. SECTION 4.4 Direct Proof and Counterexample IV: Division into Cases and the Quotient-Remainder Theorem Copyright © Cengage Learning. All rights reserved. Direct Proof and Counterexample IV: Division into Cases and the Quotient-Remainder Theorem The quotient-remainder theorem says that when any integer n is divided by any positive integer d, the result is a quotient q and a nonnegative remainder r that is smaller than d. 3 Example 1 – The Quotient-Remainder Theorem For each of the following values of n and d, find integers q and r such that and a. n = 54, d = 4 b. n = –54, d = 4 c. n = 54, d = 70 Solution: a. b. c. 4 div and mod 5 div and mod A number of computer languages have built-in functions that enable you to compute many values of q and r for the quotient-remainder theorem. These functions are called div and mod in Pascal, are called / and % in C and C++, are called / and % in Java, and are called / (or \) and mod in .NET. The functions give the values that satisfy the quotient-remainder theorem when a nonnegative integer n is divided by a positive integer d and the result is assigned to an integer variable. 6 div and mod However, they do not give the values that satisfy the quotient-remainder theorem when a negative integer n is divided by a positive integer d. 7 div and mod For instance, to compute n div d for a nonnegative integer n and a positive integer d, you just divide n by d and ignore the part of the answer to the right of the decimal point. -
Understanding Fractions – Interpretations And
Understanding fractions: interpretations and representations An iTalk2Learn Guide for teachers Version 1.0 28-04-2014 1 1 Developing a coherent system for fractions learning Did you know that children’s performance in fractions predicts their mathematics achievement in secondary school, above and beyond the contributions of whole number arithmetic knowledge, verbal and non-verbal IQ, working memory, and family education and income? Seigler et al (2012) The iTalk2Learn project aims at helping primary school children develop robust knowledge in the field of fractions. Fractions are one of the most difficult aspect of mathematics to teach and learn (Charalambous & Pitta-Pantazi, 2007). The difficulty arises because of the complexity of fractions, such as the number of ways they can be interpreted and the number of representations teachers can draw upon to teach. In this paper we discuss these two aspect of fractions and present the iTalk2Learn Fractions Interpretations / Representations Matrix that you may find helpful in your fractions planning and teaching. 1.1 Interpretations of fractions When teaching fractions, we need to take into account that fractions can be interpreted in several different ways (Kieran, 1976, 1993). The interpretations are part-whole, ratio, operator, quotient, and measure. There is inevitable overlapping between the interpretations, but in Table 1 each interpretation is exemplified using the fraction ¾. Table 1. Interpretations of fractions, exemplified using 3/4. Interpretation Commentary Part-whole In part-whole cases, a continuous quantity or a set of discrete objects is partitioned into a number of equal-sized parts. In this interpretation, the numerator must be smaller than the denominator. -
Introduction to Uncertainties (Prepared for Physics 15 and 17)
Introduction to Uncertainties (prepared for physics 15 and 17) Average deviation. When you have repeated the same measurement several times, common sense suggests that your “best” result is the average value of the numbers. We still need to know how “good” this average value is. One measure is called the average deviation. The average deviation or “RMS deviation” of a data set is the average value of the absolute value of the differences between the individual data numbers and the average of the data set. For example if the average is 23.5cm/s, and the average deviation is 0.7cm/s, then the number can be expressed as (23.5 ± 0.7) cm/sec. Rule 0. Numerical and fractional uncertainties. The uncertainty in a quantity can be expressed in numerical or fractional forms. Thus in the above example, ± 0.7 cm/sec is a numerical uncertainty, but we could also express it as ± 2.98% , which is a fraction or %. (Remember, %’s are hundredths.) Rule 1. Addition and subtraction. If you are adding or subtracting two uncertain numbers, then the numerical uncertainty of the sum or difference is the sum of the numerical uncertainties of the two numbers. For example, if A = 3.4± .5 m and B = 6.3± .2 m, then A+B = 9.7± .7 m , and A- B = - 2.9± .7 m. Notice that the numerical uncertainty is the same in these two cases, but the fractional uncertainty is very different. Rule2. Multiplication and division. If you are multiplying or dividing two uncertain numbers, then the fractional uncertainty of the product or quotient is the sum of the fractional uncertainties of the two numbers. -
Unit 6: Multiply & Divide Fractions Key Words to Know
Unit 6: Multiply & Divide Fractions Learning Targets: LT 1: Interpret a fraction as division of the numerator by the denominator (a/b = a ÷ b) LT 2: Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers, e.g. by using visual fraction models or equations to represent the problem. LT 3: Apply and extend previous understanding of multiplication to multiply a fraction or whole number by a fraction. LT 4: Interpret the product (a/b) q ÷ b. LT 5: Use a visual fraction model. Conversation Starters: Key Words § How are fractions like division problems? (for to Know example: If 9 people want to shar a 50-lb *Fraction sack of rice equally by *Numerator weight, how many pounds *Denominator of rice should each *Mixed number *Improper fraction person get?) *Product § 3 pizzas at 10 slices each *Equation need to be divided by 14 *Division friends. How many pieces would each friend receive? § How can a model help us make sense of a problem? Fractions as Division Students will interpret a fraction as division of the numerator by the { denominator. } What does a fraction as division look like? How can I support this Important Steps strategy at home? - Frac&ons are another way to Practice show division. https://www.khanacademy.org/math/cc- - Fractions are equal size pieces of a fifth-grade-math/cc-5th-fractions-topic/ whole. tcc-5th-fractions-as-division/v/fractions- - The numerator becomes the as-division dividend and the denominator becomes the divisor. Quotient as a Fraction Students will solve real world problems by dividing whole numbers that have a quotient resulting in a fraction. -
Ratios Rates and Unit Rates Worksheet
Ratios Rates And Unit Rates Worksheet Foaming and unhatched Hill circles fore and decalcifies his dogmatizer invectively and inquisitively. Atheistic Smitty never can so stylishly or wire any Goidelic hottest. Traveling Bernie farcings that MacArthur misshape nowadays and economising pickaback. Ratios worksheets are part of a checklist format in good food web worksheet. Grade. A mute is a guideline or little that defines how oil of one chamber have compared to utilize Unit rates are just a factory more money A discrete rate distinguishes the. Clearance for every part of the denominator have little coloring activity is a different units of. Polish your email address will help you will challenge kids less formal way of soda you compare two pairs have iframes disabled or as fractions. Write ratios and rates as fractions in simplest form and unit rates Find unit prices. Unit rates for bell ringers, check if there will always be kept dry completely before. Mathlinks grade 6 student packet 11 ratios and unit rates. Street clothes for the worksheet library, not have been saved in excel overview now please try again with minutes in an example. How to Calculate Unit Rates & Unit Prices Video & Lesson. High resolution image in the numerator and organized house cleaning tips and tub and if you. Find each worksheet to number of our extensive math. It really see what percent is. Unit Rates Ratios Proportional Reasoning Double Number. Unit Rates and Equivalent Rates Grade 6 Practice with. To heighten their logical reasoning with this worksheet shown above example of math worksheets kiddy math problems related to opt out of penguins and experienced seniors sharing templates. -
2008 Erik Axel Karlfeldt Memorial Open Round 3
2008 Erik Axel Karlfeldt Memorial Open Round 3 1. Montgomery Gentry performs this song on Dacin’ with Thunder, an album which claims to be “official music of the professional bull riders.” A cover of this song was performed by Chris Daughtry on the American Idol Season 5: Encores album. In the final episode of the third season of Supernatural, the Winchester brothers sing along to it while driving to New Harmony. Triumph the Insult Comic Dog once quoted its lyrics derisively to the band which introduced it to the world. It preceded “Never Say Goodbye” as a single from a 1987 album, and has been heard as the theme song to Deadliest Catch. Proclaiming that the singer is a “cowboy” who rides on a “steel horse,” FTP, name this song by Bon Jovi, which was meant to be part of a Western theme album. ANSWER: “Wanted Dead or Alive” 2. In its first season, this team was led by center Kamila Vodickova, the team’s first-ever draft pick, and Edna Campbell. This team is currently coached by Brian Agler, who replaced Hall of Famer Anne Donovan this past offseason. In the most recent draft they took Allie Quigley, and they had the first overall pick in the WNBA draft in both 2001 and 2002. They have made it out of the first round of the playoffs only once, in 2004, when they won the championship behind the play of Betty Lennox. Currently it features reigning MVP Lauren Jackson and point guard Sue Bird. FTP name this WNBA team that plays in Key Arena in the Pacific Northwest. -
Division Into Cases and the Quotient-Remainder Theorem
4.4 Direct Proof and Counterexample IV: Division into Cases and the Quotient-Remainder Theorem 4.4 Quotient-Remainder Theorem 1 / 4 1 n = 34 and d = 6. 2 n = −34 and d = 6. Examples For each of the following values of n and d, find integers q and r such that n = dq + r and 0 ≤ r < d. The Quotient-Remainder Theorem Theorem Given any integer n and positive integer d, there exist unique integers q and r such that n = dq + r and 0 ≤ r < d: 4.4 Quotient-Remainder Theorem 2 / 4 2 n = −34 and d = 6. The Quotient-Remainder Theorem Theorem Given any integer n and positive integer d, there exist unique integers q and r such that n = dq + r and 0 ≤ r < d: Examples For each of the following values of n and d, find integers q and r such that n = dq + r and 0 ≤ r < d. 1 n = 34 and d = 6. 4.4 Quotient-Remainder Theorem 2 / 4 The Quotient-Remainder Theorem Theorem Given any integer n and positive integer d, there exist unique integers q and r such that n = dq + r and 0 ≤ r < d: Examples For each of the following values of n and d, find integers q and r such that n = dq + r and 0 ≤ r < d. 1 n = 34 and d = 6. 2 n = −34 and d = 6. 4.4 Quotient-Remainder Theorem 2 / 4 1 Compute 33 div 9 and 33 mod 9 (by hand and Python). 2 Keeping in mind which years are leap years, what day of the week will be 1 year from today? 3 Suppose that m is an integer. -
Grade 5 Math Index For
Common Core Standards Plus – Mathematics – Grade 5 with Common Core ELD Standard Alignment Domain Lesson Focus Standard(s) ELD Standards 1 Place Value Patterns 5.NBT.1: Recognize that in a multi‐digit 2 Place Value Patterns number, a digit in one place represents 10 times as much as it represents in the place ELD.PI.5.5: Listening actively and 3 Place Value Patterns asking/ answering questions about what to its right and 1/10 of what it represents was heard. 4 Place Value Patterns in the place to its left. E1 Evaluation ‐ Place Value Patterns 5 Powers of Ten 5.NBT.2: Explain patterns in the number of zeros of the product when multiplying a 6 Multiply by Powers of Ten number by powers of 10, and explain patterns in the placement of the decimal ELD.PI.5.5: Listening actively and 7 Divide by Powers of Ten asking/ answering questions about what point when a decimal is multiplied or was heard. 8 Multiply & Divide by Powers of Ten divided by a power of 10. Use whole‐ ELD.PI.5.10: Composing/writing number exponents to denote powers of literary and informational texts. E2 Evaluation ‐ Powers of Ten 10. P1 Performance Lesson #1 Power of Ten (5.NBT.1, 5.NBT.2) 5.NBT.7 Word Form of Decimals ‐ 9 5.NBT.3: Read, write, and compare 10 Expanded Form of Decimals decimals to thousandths. ELD.PI.5.5: Listening actively and Ten 5.NBT.3a: Read and write decimals to asking/ answering questions about what 5.NBT.1 Standard Form of Decimals thousandths using base‐ten numerals, was heard. -
Study in Egyptian Fractions
1 STUDY IN EGYPTIAN FRACTIONS Robert P. Schneider Whether operating with fingers, stones or hieroglyphic symbols, the ancient mathematician would have been in many respects as familiar with the integers and rational numbers as is the modern researcher. If we regard both written symbols and unwritten arrangements of objects to be forms of notation for numbers, then through the ancient notations and their related number systems flowed the same arithmetic properties—associativity, commutativity, distributivity—that we know so intimately today, having probed and extended these empirical laws using modern tools such as set theory and Peano’s axioms. It is fascinating to contemplate that we share our base-ten number system and its arithmetic, almost as natural to us as sunlight and the air we breathe, with the scribes of ancient Egypt [1, p. 85]. We use different symbols to denote the numbers and operations, but our arithmetic was theirs as well. Our notation for fractions even mimics theirs with its two-tiered arrangement foreshadowing our numerator and denominator; however, the Egyptian notation for fractions leaves no space for numbers in the numerator, the position being filled by a hieroglyphic symbol meaning “part” [1, p. 93]. Aside from having special symbols to denote 2/3 and 3/4, the Egyptians always understood the numerator to be equal to unity in their fractions [4]. The representation of an improper fraction as the sum of distinct unit fractions, or fractions having numerators equal to one, is referred to as an “Egyptian fraction” [3]. I found the Egyptians’ use of fractions, as well as their multiplication and division algorithms [1, pp. -
Eureka Math™ Tips for Parents Module 2
Grade 6 Eureka Math™ Tips for Parents Module 2 The chart below shows the relationships between various fractions and may be a great Key Words tool for your child throughout this module. Greatest Common Factor In this 19-lesson module, students complete The greatest common factor of two whole numbers (not both zero) is the their understanding of the four operations as they study division of whole numbers, division greatest whole number that is a by a fraction, division of decimals and factor of each number. For operations on multi-digit decimals. This example, the GCF of 24 and 36 is 12 expanded understanding serves to complete because when all of the factors of their study of the four operations with positive 24 and 36 are listed, the largest rational numbers, preparing students for factor they share is 12. understanding, locating, and ordering negative rational numbers and working with algebraic Least Common Multiple expressions. The least common multiple of two whole numbers is the least whole number greater than zero that is a What Came Before this Module: multiple of each number. For Below is an example of how a fraction bar model can be used to represent the Students added, subtracted, and example, the LCM of 4 and 6 is 12 quotient in a division problem. multiplied fractions and decimals (to because when the multiples of 4 and the hundredths place). They divided a 6 are listed, the smallest or first unit fraction by a non-zero whole multiple they share is 12. number as well as divided a whole number by a unit fraction. -
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Young Parents Demonstration Program: Round Iii Grantee Implementation and Impact Results
YOUNG PARENTS DEMONSTRATION PROGRAM: ROUND III GRANTEE IMPLEMENTATION AND IMPACT RESULTS FINAL REPORT JUNE 2018 Submitted to: EMPLOYMENT AND TRAINING ADMINISTRATION U.S. DEPARTMENT OF LABOR Submitted by: CAPITAL RESEARCH CORPORATION, INC. THE URBAN INSTITUTE WESTAT, INC. Report Authors: John Trutko, Lauren Eyster, Tracy Vericker, Carolyn O’Brien, Alexander Trutko, Sybil Mendonca, Alan Dodkowitz, and Nathan Sick This project has been funded, either wholly or in part, with Federal funds from the Department of Labor, Employment and Training Administration under Contract Number DOLQ101A21531- DOLU101A21545/DOLU131A22068 and Contract Number GS-10F-0218W, Task Order1630DC-17-F-00003. The contents of this publication do not necessarily reflect the views or policies of the Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement of same by the U.S. Government. TABLE OF CONTENTS LIST OF EXHIBITS.................................................................................................................... iii ABSTRACT ................................................................................................................................. vii ACKNOWLEDGMENTS ....................................................................................................... vviii LISTS OF ACRONYMS ............................................................................................................ iix EXECUTIVE SUMMARY ........................................................................................................