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.

Slides:

Advertisements

Similar presentations

Number Factors and Multiples Saturday, 09 September 2006 ©RSH.

Advertisements

Factors Factor ladders JMG.

Prime Factor Decomposition

Targeting Grade C GCSE Mathematics Number

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.

Lesson 9 Factors, Multiples, Primes and Squares. Mathswatch 44/95/96

Venn Diagrams to find the HCF and LCM

L.C.M. © T Madas.

Use of Venn Diagrams to find the HCF and LCM

Types of Number – Multiples, Factors & Primes

GREATEST COMMON FACTOR

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 And Least common multiple

Least Common Multiple (LCM)

{8, 16, 24, 32, …} are the multiples of 8 Common Multiples

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

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 = … …

Whiteboardmaths.com © 2004 All rights reserved

Lowest Common Multiple (LCM)

Unit 6 Indices and Factors Presentation 1Square and Square Roots Presentation 2Cube and Cube Roots Presentation 3Index Notation Presentation 4Rules of.

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

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

Multiples and Factors L/O: To recognise and use multiples, factors, LCM and HCF 19 November, 2015 Use your tech savvy skills and find and write the definitions.

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.

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

Integers Objectives: C Grade Recognise Prime Numbers

Types of numbers BTEOTSSBAT: Recognise even, odd, prime, square and triangle numbers Understand the terms factor and multiples Be able to express numbers.

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

Numbers Properties Learning Objective: Recognise and use multiples, factors, common factor, highest common factor, lowest common multiple and primes; find.

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.

HCF AND LCM © Fail to plan, Plan to fail The true father of maths.

X X X 129 XX X X X X X X XX Identify the prime numbers.

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

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

Exercise 1 Oral Examples.

Types of numbers BTEOTSSBAT:

Factors Multiples and products of Primes

Types of Numbers Multiples and LCM Factors and HCF

Revision for year 7.

Number and patterns quiz

Whole Number Arithmetic

Literacy Research Memory Skill Practice Stretch!

HIGHEST COMMON FACTOR ( HCF ).

Finding the LCM and HCF using Prime Factor Decomposition

Literacy Research Memory Skill Practice Stretch!

Least Common Multiples

F5 To do this activity you should:

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

Factor Trees and Surds L.O.

Prime Factors Objective

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

The Highest Common Factor

Finding the LCM of Polynomials

HCF & LCM – Prime Factorisation – Demonstration

HCF & LCM – Prime Factorisation – Worksheet A

HCF & LCM – Prime Factorisation – Foundation – GCSE Questions

Lowest Common Multiples – Prime Factorisation – Demonstration

HCF & LCM – Prime Factorisation – Card Complete & Match

Presentation transcript:

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 prime has exactly two factors

Write 24 in prime factor form… So 24 = 2 x 2 x 2 x 3

Write 30 in prime factor form… So 30 = 2 x 3 x 5

Write these numbers in prime factor form…..  (a) 12  (b) 20  (c) 30  (d) 48  (e) 100  (f) 120

Highest Common Factor  Example- Find the HCF of 12 and 18 Write out all the factors of each number Write out all the factors of each number 12:- 1, 2, 3, 4, 6, 12 12:- 1, 2, 3, 4, 6, 12 18:- 1, 2, 3, 6, 18 18:- 1, 2, 3, 6, 18 The HCF is the biggest number that is in both lists The HCF is the biggest number that is in both lists HCF of 12 and 18 = 6 HCF of 12 and 18 = 6

Lowest Common Multiple  Example- Find the LCM of 6 and 8 Write out the first few multiples of each number Write out the first few multiples of each number 6:- 6, 12, 18, 24, 30, 36, 42, 48, 54, 60,.. 6:- 6, 12, 18, 24, 30, 36, 42, 48, 54, 60,.. 8:- 8, 16, 24, 32, 40, 48, 56, 64, …… 8:- 8, 16, 24, 32, 40, 48, 56, 64, …… The LCM is the lowest number in both lists The LCM is the lowest number in both lists So the LCM of 6 and 8 = 48 So the LCM of 6 and 8 = 48