Section One Flashcards
Number (17 cards)
What is an integer
A whole number
What are rational numbers
They are either integers, fractions or terminating or recurring decimals
What is an irrational number
They are never ending, non repeating decimals
What is BODMAS
B-Brackets O-Other things D-Divison M-Multiplication A-Addition S-Subtraction
What are Multiples
The Factors of a number are all the numbers that divide into it
What is a prime number
A prime number is a number which doesn’t divide by anything, apart from itself and 1 ( however 1 is not a prime number)
How to find prime factors
Using a factor tree
What is LCM and how to find it
It is the smallest number that will divide by all numbers in question.
First list all the prime factors that appear in both numbers. If a factor appears more than once in one of the numbers list it the same amount of times and multiply together to give the LCM
What is the HCF and how to find it
It is the Biggest number that will divide by all numbers in question.
First list all the prime factors that appear in both numbers. Multiply together to find the HCF.
Fractions- what is cancelling down
Simplifying a fraction
Fractions- what are mixed numbers
Mixed numbers are numbers with an integer and a fraction part
Fractions- How to multiply fractions
Multiply top and bottom separately
Fractions- How to divide fractions
Turn the 2nd fraction upside down and then multiply
Fractions- How to get a common denominator
Find the lowest common multiple of the denominators
Fractions- How to add or subtract fractions
First make sure the denominators are the same then add/subtract the numerator only. Convert to improper fractions first
How to get a fraction to a decimal to a percentage
From a fraction divide to get a decimal and times by 100 to get a percentage
How to get a percentage to a decimal to a fraction
From a percentage divide by 100 to get a decimal then either use the X method for recurring decimals or for terminating decimals its easy
