Topic 1 Numbers

BODMAS:

Bodmas shows the order in wich to calculate the question in order to get the correct answer
B:Brackets
O:Order
D:Divide
M:Multipy
A:Addition
S:Subtraction
When you have a square of cubed make sure to calculate that first before continuing with Bodmas.

Types of Numbers:

Integers : A whole number that can be positive or negative or zero
Rational : Numbers that can be written as Fractions
Rational comes in 3 diffrent forms
Integers
Fractions
Decimals
Irrational Numbers : They are messy numbers, this means that They cant be Written as fractions and they are continues and never ending. Things like roots and surds.
Prime Numbers: A number that dose not divide by anything apart from 1 and itself.
Multiples : They are just numbers in the time table of the given number within the question. For example “What are the multiples of 36.” The answers would be (1×36) , (2×18), (3×12), (4×9), and (6×6), all of which are derived from multiplying 36 by whole numbers.
Factors : They are numbers that divide evenly into other numbers. For example “The factors of 12” The answer is (1×12) (2×6) (3×4). This can be used in a factor tree.

Finding Prime numbers in a factor tree example

LCM and HCM

LCM = Lowest common multiple That will divide by all numbers in the question

Method:

HCM

HCM = Highest common multiple that will divide by all numbers in the question

Method:

Fractions: