They must be really lost…people have been looking for them since I was a child. So, what are you learning in math? We’re trying to find Least Common Multiple.

Slides:

Advertisements

Similar presentations

Greatest common factors (gcf) & least common multiples (lcm)

Advertisements

PRIME FACTORIZATION GCF & LCM

Prime and Composite Numbers

Use of Venn Diagrams to find the GCF and LCM

Section 5.1 Prime Factorization and Greatest Common Factor.

5.1 Number Theory. The study of numbers and their properties. The numbers we use to count are called the Natural Numbers or Counting Numbers.

Prime and Composite Numbers, Prime Factorization, GCF & LCM.

4.2 Prime and Composite Numbers Remember to Silence Your Cell Phone and Put It In Your Bag!

Common Factors *Identify Common Factors of a Set of Whole Numbers 5.3D

Factorization Factorization is writing a number as a product of factors

6 th VOCABULARY Helpful resources: glossary in the back of the book

Prime Factorization 2-1.

The ABC’s of GCF and LCM.

PRIME AND COMPOSITE NUMBERS

How do you use prime factorization to find the GCF or LCM of two whole numbers? For example, how do you use prime factors to find the GCF and LCM of 8.

Chapter 2 Practice Test Mastery Test A

3.1 Factors and Multiples of Whole Numbers. A prime number A Composite number A factor of a Number Prime Factorization Greatest Common Factor Common Multiple.

Used to find the LCM and GCF to help us add and subtract fractions.

Least Common Multiple (LCM) of

Tuesday, April 10 th Please complete Warm up Simplify 1. 2.

Factor vs Multiple 24 FactorsMultiples. Prime Factorization Using factor tree or division method24.

Greatest Common Factor and Least Common Multiples GCF and LCM

Prime Factorization (Factor Trees) Greatest Common Factor

Factors & Multiples Lesson 1 - Factors & GCF

4.3 Greatest Common Factors (GCF)

GCF and LCM Lesson 3.01.

Mrs. Hubbard 6 th Grade Purple team.  LEQ: What is the purpose of exponential notation  LEQ: LEQ: How do I show the factor form of a number expressed.

Do Now Circle the prime numbers :

GCF – Greatest Common Factor 4-3

GREATEST COMMON FACTOR (GCF) LEAST COMMON MULTIPLE (LCM) EXPONENTS SQUARE ROOTS ORDER OF OPERATIONS.

5.1 Divisibility. Natural Numbers The set of natural numbers or counting numbers is {1,2,3,4,5,6,…}

Factors are numbers you can multiply together to get another number. Multiples are numbers that can be divided by another number without a remainder. Its.

Chapter Do you remember? The definition of: prime number? factor? prime factor? common factor? greatest common factor? multiple? common multiple?

Prime Time Whole Number Arithmetic. A little vocabulary Factors are one of two or more whole numbers that are multiplied together to get a Product 5 x.

Greatest Common Factor Lesson 3-3. Greatest Common Factor (GCF) The greatest common factor is the largest factor that two numbers share. Let’s find the.

REMEMBER: What is a factor? What are the factors of 24?

Greatest Common Factor Least Common Multiple Factorization.

Least Common Multiples (LCM) & Greatest Common Factors (GCF)

 The greatest common factor is the largest factor that two numbers share.  Factors- The number that are multiplied together in a multiplication problem.

Chapter 11 Review Math. Tell whether the following numbers are divisible by 2, 3, 4, 5, 6, 8, 9, 10, and ,488 1,881 3,360.

Factors & Number Theory

Greatest Common Factor and Least Common Multiples GCF and LCM.

Least Common Multiples and Greatest Common Factors Lesson 4.3.

It starts exactly like GCF! LET’S MOVE ON TO LEAST COMMON MULTIPLE!

Slide Copyright © 2009 Pearson Education, Inc. 5.1 Number Theory.

Lesson 4-5 LCM: Least Common Multiple. Multiples A multiple is formed by multiplying a given number by the counting numbers. The counting numbers are.

Copyright©amberpasillas2010 RULES FOR DIVISIBILITY #1 A Number Is Divisible By: IF The last digit is even (0, 2, 4, 6, 8) The last 2 digits.

Least Common Multiples

Topic #3: GCF and LCM What is the difference between a factor and a multiple? List all of the factors and the first 3 multiples of 6.

Number Theory: Prime and Composite Numbers

Factors and Multiples of Whole Numbers Math 10 Ms. McGrath.

PRIME FACTORIZATION Pg. 12. ESSENTIAL QUESTION HOW do you use equivalent rates in the real world?

Greatest Common Factor and Least Common Multiples GCF and LCM

Greatest Common Factor Least Common Multiple

Prime Factorization (Factor Trees) Greatest Common Factor

Least Common Multiples and Greatest Common Factors

Prime Factorization Prime factorization is the long string of factors that is made up of all prime numbers.

Least Common Multiples (LCM) & Greatest Common Factors (GCF)

Finding the Greatest Common Factor

Finding the GCF and LCM.

Greatest Common Factor and Least Common Multiples GCF and LCM

Prime Factorization Course

Greatest Common Factor and Least Common Multiples GCF and LCM

Greatest Common Factor (GCF)

Factors and Multiples of Whole Numbers

Finding the LCM and the GCF Using Prime Factorization

Least Common Multiples and Greatest Common Factors

Presentation transcript:

They must be really lost…people have been looking for them since I was a child. So, what are you learning in math? We’re trying to find Least Common Multiple and Greatest Common Factor.

A prime number is a natural number that has exactly two positive factors, 1 and itself.factors A composite number is a natural number that has more than two positive factors. (Now might be a good time to review divisibility rules.)divisibility rules 0 is neither prime nor composite because it is not a natural number. 1 is neither prime nor composite because it only has one factor, 1. Hut two! Hut three! Hut Five! Seven! Eleven! 13! 17! 19! 23! 29!.... And Deion Sanders thought HE was Prime Time!

Prime factorization is a number written as a product of all its prime factors. You can use factor trees to find the prime factorization of a number. –You might have different branches than someone else, but you should end up with the same prime numbers on the bottom of all branches. –Let’s look at two ways to find the prime factorization of the number = 2 x 2 x 3 = 2 2 x 3 3 See video

You might remember the listing method to find the greatest common factor, GCF. factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36 factors of 54: 1, 2, 3, 6, 9, 18, 27, 54 You can also use prime factorization. (GCF is the product of all prime factors the numbers have in common) 36 = 2 x 2 x 3 x 3 54 = 2 x 3 x 3 x 3 GCF(36,54) = 2 x 3 x 3 = 18 See video GCF(36,54) = 18 The greatest common factor is the largest factor that two or more numbers have in common.

See video You might remember the listing method to find the least common multiple, LCM. You can also use prime factorization. (Multiply all prime factors but don’t include factors you already listed from a different number.) multiples of 36: multiples of 26: 0 0, 36, 26, 52 0 is a multiple of each, but LCM needs to be > 0., 72, 78, 108, 104, 130, 144, 156, 180, 182 LCM(26,36) = 2 x 13 x 2 x 3 x 3 = 26 x 18 = 468 …but it’s not always the easiest method. The least common multiple is the smallest natural number that is a common multiple of two or more numbers.multiple 26 = 2 x = 2 x 2 x 3 x 3, …

Practice Here is a great website to practice making factor trees. If you ask for two trees, you will be asked to find GCF and LCM after finding the prime factors. You can even select to pick the numbers yourself.great website Enjoy!