127 449 367 313 137 199 919 303153 415 57187 127 313 X 199 449 367 X 137 919 X 129 XX X X X X X X XX 213 93 111 453 1 666183 Identify the prime numbers.

Slides:

Advertisements

Similar presentations

Prime Factor Decomposition

Advertisements

Prime Factorization.. Prime number Composite numbers Prime factorization Factor tree.

Use of Venn Diagrams to find the GCF and LCM

PRODUCT OF PRIME FACTORS. Product of Prime Factors ANY whole number can be broken down and written as a Product of Prime Factors What is a PRIME FACTOR.

Find the HCF and LCM When finding the HCF and LCM of relatively low/easy numbers we can use the methods that we are used to such as find the HCF and LCM.

Venn Diagrams to find the HCF and LCM

Use of Venn Diagrams to find the HCF and LCM

Least Common Multiple Objective: Finding Least Common Multiple (LCM)

HCF and LCM Primes Press Ctrl-A ©2009 G Dear – Not to be sold/Free to use Stage 4 Years 7 & 8 Web Resources.

GREATEST COMMON FACTOR

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.

Multiples If a number divides exactly into another number, the second is a multiple of the first. Example 3, 6, 9, 12, 15, 18 10, 12, 14, 16, 18, 20 are.

Highest Common Factors & Lowest common Multiples 9Y4 Tuesday 30 th November 2004.

Least Common Multiple.

Prime Number – An integer whose only factors are 1 and itself 2, 3, 5, 7,11, 13, 17, 19.

Lowest Common Multiple Find the Lowest Common Multiple of 10 and 12 Multiples of 12: Multiples of 10: LCM = … …

Lowest Common Multiple (LCM)

Using Factor Trees to find the least common multiple (LCM)

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

Finding the LCM (least common multiple) and GCF (greatest common factor)

Puzzle Can you draw this without going over the same line twice and without taking your pen off the page?

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

Prime Factorisation. Starter- Make a list of all the prime numbers between 1 and 50 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47 Remember- a.

Whole Number Arithmetic Highest common factor Lowest common multiple.

Multiples and Factors.

1.Create a Venn diagram using the numbers in the cloud to show the odd and prime numbers 2.Create a Venn diagram using the numbers in the cloud to show.

Vocabulary Multiples Common multiples A number times 1, 2, 3, 4 etc.

In this presentation I will be explaining prime numbers, how to find prime factors of numbers and the Highest conmen factor and the lowest conmen multiple.

Factors Prime Factors Multiples Common Factors and Highest Common Factor (HCF) Factors and Multiples Common Multiples and Lowest Common Multiple (LCM)

What is it? But, What is a multiple? It is the product of a whole number multiplied times any other whole number (factors). 7 X 8 = 56 (multiple or.

Calculations H.C.F. L.C.M. using Prime Factors © T Madas.

Carol Chervenak Finding the Greatest Common Factor (GCF) and the Least Common Multiple (LCM) using Prime Factorization! No need to make lists like you.

Prime Factors Friday, 19 February 2016 Objective Write a number as a product of its prime factors. Find the HCF and LCM of two numbers.

Greatest Common Factor and Least Common Multiples GCF and LCM.

REVIEWING HCF AND LCM ONLY FOR 3 OR 4 NUMBERS!. FOR 2 NUMBERS.. NOTHING CHANGES! DRAW THE VENN DIAGRAM! HCF  WHAT IS COMMON (IN THE MIDDLE) LCM  WHAT.

Multiples, Factors and Primes. Multiples A multiple of a number is found by multiplying the number by any whole number. What are the first six multiples.

Mathsercise-C Factors & Multiples Ready? Here we go!

Prime Factors/ Indices. Objectives By the end of the lesson learners will be able to: Identify Prime Factors (Process of the Factor Tree) Express a number.

© T Madas. Find the H.C.F. and the L.C.M. of 30 and H.C.F. = 2 x 3 = 6.

Greatest Common Factor and Least Common Multiples GCF and LCM

Exercise 1 Oral Examples.

Highest Common Factor (HCF) and Lowest Common Multiple (LCM)

Factors Multiples and products of Primes

Revision for year 7.

UNIT 1: FACTORS & EXPONENTS

Literacy Research Memory Skill Practice Stretch!

HIGHEST COMMON FACTOR ( HCF ).

L.O. To be able to find the hcf AND LCM OF 3 OR 4 NUMBERS

Finding the LCM and HCF using Prime Factor Decomposition

Literacy Research Memory Skill Practice Stretch!

Greatest Common Factor and Least Common Multiples GCF and LCM

Multiples GCSE Maths.

F5 To do this activity you should:

Greatest Common Factor and Least Common Multiples GCF and LCM

LCM (lowest common multiples)

Venn Diagrams to find the HCF and LCM

BIDMAS ORDER OF OPERATIONS.

Least Common Multiple.

H.C.F. and L.C.M. of Polynomials

Prime Factors Objective

HCF and LCM - Product of Prime Factors using Venn Diagram – Exercise 1

Show this alternative factor tree for 36.

HCF & LCM – Prime Factorisation – Demonstration

HCF & LCM – Prime Factorisation – Messenger!

HCF & LCM – Prime Factorisation – Worksheet A

Calculate: − 2 7 1) 2).

Lowest Common Multiples – Prime Factorisation – Demonstration

Highest Common Factor – Prime Factorisation – Demonstration

HCF & LCM – Prime Factorisation – Card Complete & Match

Presentation transcript:

X X X 129 XX X X X X X X XX Identify the prime numbers in the grid below. There are 7 to find.

To use the prime factorisation of a number Use a Venn diagram to sort information Use prime factorisations to find the lowest common multiple of two numbers

48 = 2 x 2 x 2 x 2 x 3 60 = 2 x 2 x 3 x Multiply the numbers in the overlap to get the HCF Multiply all the numbers in the Venn diagram to get the LCM. HCF = 2 x 2 x 3 = 12 LCM = 2 x 2 x 3 x 2 x 2 x 5 = 240 Find the HCF and LCM of the following: 24 and and and 72

Using prime factors to find the HCF and LCM

Main Task Page 8, Exercise 1D Starting Q4 Securing Q5-7 Applying Q8/9

= 2 × 2 × 3 × = 2 × 3 × 7 × HCF of 60 and 294 =2 × 3 x 7 = 35 LCM of 60 and 294 = 2 × 2 × 2 x 3 × 3 x 5 x 7 × 7 = Spot the three mistakes

= 2 × 2 × 3 × = 2 × 3 × 7 × HCF of 60 and 294 =2 × 3= 6 LCM of 60 and 294 = 2 × 5 × 2 × 3 × 7 × 7 =2940 Correct method