Multiples, Factors and Prime Numbers!. Multiples - Any number has a set of multiples. When a number is multiplied by any whole number (integer) the result.

Slides:

Advertisements

Similar presentations

4 th Grade Division Lesson 11: Prime and Composite Numbers.

Advertisements

Grid method for multiplying by a 1 digit number. 1.Firstly, write the multiplication sum and then draw the grid. The largest number goes at the top so.

Types of Number

A number is divisible by another number if the quotient is a whole number with no remainder.

Measurement Model of Addition

Chapter 4 Number Theory. Terms Factors Divides, divisible, divisibility Multiple.

Math Message Lesson Browse through your journal. Then read “Welcome to Fifth Grade Everyday Mathematics,” on page 1 in your journal. Unit 1 - EDM.

Factors Terminology: 3  4 =12

Integers: Multiplication & Division

Prime and Composite Numbers. Introduction Me: I am in compacted math and I will show you the math concept of prime and composite numbers. Concept: Every.

Divisibility Rules How do we know when we can divide one number into another exactly?

Chapter 2 Practice Test Mastery Test A

4.1 Divisibility and Mental Math. Mental Math Is 56 divisible by 7? Think! 56 = 8 x 7 Is 56 divisible by 4? Think! 56 = 8 x 7, and 4 x 2 = 8, 56 is divisible.

Maths Mastery. What other (total) numbers of spots are possible with these two ladybirds? How about different spotted ladybirds? Investigate…

SWBAT to use divisibility rules for 2, 3, 4, 5, 6, 8, 9, and 10

PRE-ALGEBRA. Lesson 4-1 Warm-Up PRE-ALGEBRA Rules: The following divisibility rules are true for all numbers. Example: Are 282, 468, 215, and 1,017 divisible.

Prime Numbers A whole number greater than 1 whose only whole number factors are 1 and itself

Sieve of Eratosthenes.

Math Message 1.1 Introduction to Everyday Math Student Reference Book Look through your student journal for things that may be different from your fourth.

7 is a prime number Factors of 7: 1, 7 Patterns and Algebra 32 Multiplication and Division 28.

Chapter 8 L8-4 Notes: Multiplying Integers. Study the examples below and see if you spot any patterns. Can you figure out the rules for multiplying and.

Integers 7th Grade Math.

DIVISIBILITY RULES.

Divisibility Rules and Finding Factors

Who Will Be the Champion? Place Value Jeopardy DivisibilityMultiplying Three Digit by a One Digit Multiplying Two Digit by a One Digit Multiplication and.

Number Theory Yolanda McHenry, Ashley Courtney, Tyler Williams, Jamiya Hagger.

Factors, Primes & Composite Numbers by Ms. Green.

Divisibility Rules. Skip Counting 1)Skip count by 3 from 3. 2)Skip count by 5 from 65. 3)Skip count by 10 from )Skip count by 6 from 138.

Sub. :- Mathematics Divisibility Std. :- 5 th Chapter no. 5.

In the Real World Dancers A dance teacher is planning a dance for a show. The dancers will be arranged in rows with the same number of dancers in each.

The Rules for Divisibility Focus 3: 6.NS.2. Start on a “Fresh Left” page! Heading for your Math Workbook Page "Divisible By" means "when you divide one.

Factors and Prime Factorization

Prime and Composite Numbers Factors What is a prime number? Is this number prime?

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.

6 th grade Math Vocabulary Word, Definition, Model Emery UNIT 1.

Chapter 5.1 McDougal Littell Middle School Math Course 1 Joseph Williams Melvin E. Sine Elementary Objective: Write whole numbers.

Decomposing a Number into Prime Factors. Learning Goals We will use our divisibility rules so that we can decompose numbers into prime factors. We’ll.

EVEN NUMBERS EVEN NUMBERS 1 = prime 2 = prime1 3 = prime 4 = 2 x 22 5 = prime 6 = 2 x 33 7 = prime 8 = 2 x 2 x 24 9 = 3 x 3 10 = 2 x 55.

Integers Rules of Operation.

Factors and Multiples.

Click the mouse button or press the Space Bar to display the answers.

Daily Math Skills Practice

___________ ____ 2, 3, 4, 5, 6, 9, 10.

Using The Sieve of Eratosthenes

Exercise 24 ÷ 2 12.

Review Basic Math Divisibility tests Prime and Composite Numbers

“Day F” September 27, :01 - 9:01 Exploratory 9: :03

Divisibility Rules.

Prime Factorization.

Year 5 Block 4- Multiplication and Division

Divisibility Rules.

Divisibility Rules.

Section 10.1 Groups.

Divisibility 2,5 and 10.

___________ ____ 2, 3, 4, 5, 6, 9, 10.

“Day A” September 27, :51 - 8:51 Math 8:53 - 9:53 Science

Composite Number.

Chapter 3: Basic Math Review

Prime Factorization Prime factorization or integer factorization of a number is the determination of the set of prime numbers which multiply together to.

Divisibility 4,8 and 11.

Prime Factorization FACTOR TREE.

DIRECTED NUMBERS.

To factor a whole number as a product of prime numbers

Divisibility A number is divisible by another number if the quotient is a whole number with no remainder.

Maths Learning Support Sheet

Presentation transcript:

Multiples, Factors and Prime Numbers!

Multiples - Any number has a set of multiples. When a number is multiplied by any whole number (integer) the result is called a multiple. For example the first five multiples of 3 are – 3x1 = 3 3x2 = 6 3x3 = 9 3x4 = 12 3x5 = 15

Rules of Divisibility - A number is divisible byIf…Examples 2The last digit is an even number12, 134, 36 3The sum of all digits when added together is divisible by = 9 4The number formed by the last two digits is divisible by ÷ 4 = 8 5The last digit is 5 or 025, 125, 50 6The last digit is even and the sum of its digits when added together are divisible by 3. 3, = 15 7No divisibility test 8The number formed by the last three digits is divisible by 8 7, ÷ 8 = 67 9The sum of all its digits is divisible by 96, = 18 10The number ends in 030, 170, 200

Question Use some of the methods for spotting multiples to decide whether the following numbers are multiples of 2, 3, 4, 5, 6, 8 or 9: a) 2652 b) 6570 c) 2401

- Factors - The concept of factor is simply the reverse of multiple. For example the factors of 12 are – 1 x 12 = 12 2 x 6 = 12 3 x 4 = 12

Prime Numbers - Any number that has precisely two factors, and no more than two, is called a prime number. For example the number 13 can only be made by multiplying 1 x 13. Whereas 12 is a composite number, not a prime number as 6 x 2 and 3 x 4 = 12.

Counter Activity - To find out if a number is a prime number and not a composite number you can use counters or draw a diagram. If you cannot make an enclosed pattern with even columns on each side then the number is a prime number.

For Example - Thirteen is a prime number as it cannot be arranged to make an enclosed pattern, as shown below. However Twelve is a composite number as it can be arranged to make different enclosed patterns, as shown below.

Can you? List all the prime numbers between 70 and 100.

Hundreds chart

Practice For revision and practice of multiples and prime numbers, the year 3 Mathematics- multiplication skill builder, (F.1-F.11) is available for students, as well as the year 4 Mathematics- prime and composite numbers (A.5) on the IXL website for students (Maths for kids). Students can choose from a variety of mathematics exercises, of different levels and kinds.

References: Math-exercises-for-kids.com-Webmaster: Laurent Monnot. Retrieved from You Tube. Prime number song. Prime Time (Maths song) Retrieved from: You Tube. Prime numbers song. Prime numbers- The Sieve of Eratosthenes. Retrieved from: om om