*Thank you for your comments on the Locker question. It is certainly an introductory lesson on our first chapter on*

**HCF and LCM**.Your follow up task is to find as much information on the subtopic below:

- Composite Numbers
- Prime factorisation
- Index Form

Please give your findings using any of the following platforms:

- simple comments (to this blog entry)
- use reference from your Maths e-textbook or any other reliable Maths books
- include reliable you-tube on this topics (pls quote source)
- maths dictionary
- sample examples from reliable resources to illustrate your understanding of subtopics

*It is important that*

you collaborate as a class to reinforce or correct one another

support your friends with examples etc.

deadline: week 4

First Comment From Mr Jo

ReplyDelete1.Prime number (this will help with Prime Factorisation)

It is a positive integer which can only be divided by the number 1 and itself. The number 1 is not a prime number.

Check Sieve of Erastosthenes @ http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes

and try yourself @

http://www.hbmeyer.de/eratosiv.htm

Hi everybody, Preston here.

ReplyDelete1. A composite number is a positive integer that has factors other than just 1 and the number itself. (Opposite of prime number)

2. A prime factorization is the meaning of writing an integer as a product of powers of prime numbers.

3. An index form is where a number is expressed using exponents (one number to the power of another).

Sources: Math dictionary

http://wiki.answers.com/Q/What_is_'index_form'

I found a video about Prime Factorisation

ReplyDeletehttp://www.youtube.com/watch?v=JjHUnjyP3jE

For any queries we can also check out Yourteacher.com mathteacher.com www.mathsisfun.com

ReplyDeleteAnother video abt prime fratorisation:

http://www.youtube.com/watch?v=qGkK8xkWs6U

Index form we can try:

http://www.mathsteacher.com.au/year10/ch08_indices/01_index_form/form.htm

A video abt index form:

http://www.youtube.com/watch?v=nZ2Xb6KnL0M

Composite no. :

http://www.mathsisfun.com/prime-composite-number.html

video:

http://www.youtube.com/watch?v=eIypmsLcNfo

Davina

Slideshows

ReplyDeleteThe slideshow for the composite numbers tells us how to differentiate between prime and composite numbers. In the index form slideshow the '.' is multiplication.

Prime Factorisation:

http://www.slideshare.net/guest8e9b21/prime-factorization-2101516

Composite numbers:

http://www.slideshare.net/taleese/prime-numbers-472705

Index Form:

http://www.slideshare.net/josesayago/index-form

1.)Composite Number

ReplyDeleteA positive(greater than 0) integer that has factors other than 1 and the number itself(Not a prime number). For example, 4,6,8,9,10,12,etc. are all composite numbers. The number 1 is not composite.

2.)Prime Factorisation

"Prime Factorization" is finding which prime numbers you need to multiply together to get the original number.

3.)Index Form

Index form is where a number is expressed using exponents - one number to the power of another.

For example, 2x2x2x2x2 is the same 2 to the power of 5, written as 25.

Hi

ReplyDelete1.) A composite number is a integer greater than 0 that has factors beside 1 and itself. 0 and 1 are neither composite nor prime numbers.

2.) Prime factorization is finding out which primes you need to multiply to get the original number.

Ex: 170=2x5x17

3.) A Index form is a subscript or a superscript used to indicate powers.

Let me share with you my views :

ReplyDelete1) A composite number is a number that has factors in addition to one and itself. All even numbers are divisible by two, so all even numbers greater than two are composite numbers. All numbers that end in five are divisible by five, so all numbers that end with five and are greater than five are composite numbers.

2) Prime factorization is when factors of a number are prime numbers, and when one is multiplied, the answer is that of the original number.

Example : The factors of 15 is 1, 3, 5 and 15 itself, both 3 and 5 are prime numbers, and 3 times 5 is equivalent to 15.

3) Index form is where a number is expressed using exponents (a quantity representing the power to which a given number is to be raised, one number to the power of another).

For example, 2 times 2 times 2 times 2 is the same as 2 to the power of 4, it is written as : the 4(quantity) is written smaller and above the 2(number to be raised).

See To Yu Xiang

Sources : http://www.aaastudy.com/fra63ax2.htm

http://www.mathsisfun.com/definitions/prime-factor.html

http://wiki.answers.com/Q/What_is_'index_form'

Hi this is Niklaus.Here is what i found out

ReplyDelete1.A number that is a the product of at least two numbers other than itself and 1

2.Prime Factorization" is finding which prime numbers you need to get the longest possible multiplication problem to get a certain number.

EG: The certain number is 12, so in order to get the longest possible multiplication, you must like divide the number to get many numbers and multiply them to get 12. Answer:2x2x3

3.Index form is where a number is expressed using exponents - one number to the power of another.EG:2x2x2x2x2x2x2x2, there is 8 x2, so to you write that 2 to the power of 8.

Composite Numbers:

ReplyDeleteA composite number is a positive integer which has a positive divisor other than one or itself.

Prime factorisation:

Prime factorization is the breaking down of a composite number into smaller non-trivial divisors, which when multiplied together equal the original integer.

Index Form:

Index form is where a number is expressed using exponents. (One to the power of another)

Sources: Wikipedia and WikiAnswers

Naveena

1)Composite Number:A number comprising factors other than 1 and itself. 1 and 2 are not composite numbers.

ReplyDelete2)Prime Factorisation:It is to write a number as a product of powers of prime numbers.

3)Index form:It is away of writing numbers that shows the power of it. It is done with numbers with one or more groups of the same factors.

Sources:www.mathwords.com, www.mathsteacher.com.au/year7/ch02.../07_index/ind.htm

Well Done 1-09

ReplyDeletegreat effort