Number Basics

Flashcards by Martin Everton, updated more than 1 year ago
 Created by Martin Everton almost 6 years ago
28
1

Description

Rational and Irrational numbers etc

Resource summary

 Question Answer Definition of a Real Number All numbers including: Integers Rational Numbers Irrational Numbers Definition of an Integer A whole number that can be either positive or negative e.g +2 and -1 Definition of a Rational Number Is a Real Number that can be written as a fraction and terminates or is recurring e.g. 1/8 Definition of an Irrational Number An Irrational Number is a real number that cannot be written as a simple fraction, and the decimal value does not recur. e.g. pi BIDMAS Brackets Indices Division Multiplication Addition Subtraction The Sum of Numbers The Addition of numbers The Product of Numbers Numbers multiplied together e.g. 9 x 8 A Difference of two Numbers The Difference is calculated by Subtracting one number from another e.g. 9 - 7 The Quotient of a Number The result of dividing one number by another e.g. 9/3 Definition of a Prime Number An integer greater than 1 whose only factors are 1 and itself Definition of a Composite Number An integer greater than 1 that isn’t a prime number. Lowest Common Multiple The lowest (or least) common multiple (LCM) of two or more integers is the smallest positive integer that is a multiple of all of them. For example, the lowest common multiple of 4 and 6 is 12 Highest Common Factor The highest common factor (HCF) of two or more integers is the largest positive number that is a factor of all of them. For example, the highest common factor of 24 and 30 is 6

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