Edexcel Maths Unit 2 Higher Tier

I've spent a few days making this, as a last minute revision..

The power point is the revision material for Mathematics B, Edexcel Modular,

Unit 2 - Number,Algebra and Geometry.

So...hope you find this useful and good luck on our exams :D

Resources: CGP revision book, BBC Bitesize

Edit: I finished the exam and dropped a few marks, but I got an A* in this unit and an A* in GCSE Maths overall! So happy! Good luck to you too! Now I will be concentrating on A-level Maths! 

My thoughts on A level Maths: I realised that just 30 minutes a day, doing solid maths, would make your life a lot easier! And also revise and look over the topic you're doing the day before the lesson (just 20 minutes or so), that way you'd feel more confident with everything. Go back and look at what you've done as well!

Thank you guys for the lovely comments! :D

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Types of Numbers
Square Numbers ­ any number times by itself.
Examples: 4 (2x2),9 (3x3),16 (4x4),etc
Cube Numbers ­ any numbers times by itself 3 times!
(Like volume of a cube!)
Examples: 8 (2x2x2), 27 (3x3x3), 64 (4x4x4),etc
Powers ­ how many times a number multiplies itself by.
Example: powers of 2:
2² = 2x2 = 4
2³ = 2x2x2= 8
2 = 2x2x2x2= 16
Prime Numbers ­ they only divide by themselves and
one.
If the number ends in 1,3,7 or 9, it means that there is a
chance of it being a prime number ­ but it doesn't mean
it is definitely a prime number! (e.g. 21,27 are NOT prime These are quite
numbers though they end in 1/7 as they both divide by basic ­ you NEED
3!)
to know them!
why…read more

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Multiples, Factors and Prime Factors
Multiple = multiply = just keep multiplying!
Multiples ­ the times table of that particular
number. E.g. the multiples of 3 = 3,6,9,12,15,18
........ So hard to explain =`=
....Please read it over
if you don't
understand~~
Factors of a number are pairs of numbers that
you multiply to get another number.
e.g. factors of 24 = 1x24,2x12,3x8,4x6 (multiply
any of those pairs and you'll get 24!) ­ just start
with 1 and keep going!
But- STOP when any numbers are repeated!
why…read more

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Examples
1x64 Factor of 64 ­
2x32 1,64,2,32,4,16,8
3x ­
4x16
5x ­ 3,5,6,7 can't be divided into 64.
6x ­ So leave it!
7x ­
8x 8 Repeated
numbers ­ so
STOP!
1x24
Don't write a number twice!
2x12 Factors of 24 ­
3x8
1,24,2,12,3,8,4,6
4x6 Always start with `1' times the
Repeated numbers number!
5x ­
­ so STOP!
6x4
why…read more

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Factor Tree
`Factor trees' are used to find prime factors (prime
factors: a number broken down into a string of prime
numbers all multiplied together) Factor tree of 420 ­ it
A factor tree looks like this: will show you the
prime factors of 420!
Each `level' of
`Level' 1 420 numbers multiplies to
get the number above
that level The numbers at the end
`Level' 2 42 42x10=420 10 (the ones in circles) are the
prime factors!
`Level' 3 6 5
6x7=42
7 2
2x5=10
2 3
2x3=6
Finally! The prime factors of 420 =2,3,7,2 and 5. You would get 420 by multiplying those
numbers.
So it's usually written with times signs = 2x3x7x2x5
However ­ examiners like to see numbers in the simplest form,
so we should write it like = 2²x3x7x5 (2²= 2x2)
why…read more

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LCM
LCM- Lowest Common Multiple ­ The smallest number that
will divide by all of the numbers in the question.
Once you know how to do the prime factors ­ LCM and HCF
are fiddlesticks!
LCM Example: Find the LCM of 42 and 36.
1) Find the prime factors of 42 and 36
2) 42=7x2x3 36=2x2x3x3
3) Circle the common prime factors
4) 42=7x2x3 36=2x2x3x3
5) Write down the ones you have circles ONCE =2x3
6) Then put the ones you haven't circled in the list=
2x3x2x3x7=252
This means if you wrote out all of the multiples
in both numbers, 252 will be the first number
that is common to both numbers. why…read more

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Comments

R0WZORZ


very good powerpoint helped me loads

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