TOPIC 1: WHOLE NUMBERS
GLOSSARY OF TERMS
Term and Explanation / Diagram
Whole Numbers The numbers 0 ; 1 ; 2; ; 3; ; 4……
Natural Numbers The numbers 1 ; 2 ; 3 ; 4 …….
BODMAS The order of operations that always needs to be followed.
Brackets ; Of ; Multiply and Divide ; Add and Subtract
Inverse operation The opposite operation that would ‘undo’ the last operation.
Addition and Subtraction are the inverse of each other.
Multiplication and Division are the inverse of each other.
Factors A number that can go into another number without a remainder.
Multiples A multiple of a number is that number multiplied by a natural number.
Commonly known as ‘times tables’.
Prime Numbers A number that has only two factors – one and itself.
The first five prime numbers are: 2 ; 3 ; 5 ; 7 ; 11
Composite numbers A number that has more than two factors.
The first five composite numbers are: 4 ; 6 ; 8 ; 9 ; 10
Highest Common factor (HCF):
The highest factor that can go into two or more numbers that is common to both of them.
For examples: the HCF of 10 and 15 is 5.
Lowest Common Multiple (LCM):
The lowest multiple of two or more numbers that is common to both of them.
For example: the LCM of 8 and 6 is 24.
Commutative An operation that works even if the numbers are swopped around.
Example : 5 + 2 is the same as 2 + 5
*Addition and multiplication are commutative.
*Division and subtraction are NOT commutative.
*Associative An operation that works if you start anywhere in the question.
Example: 3 + 6 + 5
GLOSSARY OF TERMS
Term and Explanation / Diagram
Whole Numbers The numbers 0 ; 1 ; 2; ; 3; ; 4……
Natural Numbers The numbers 1 ; 2 ; 3 ; 4 …….
BODMAS The order of operations that always needs to be followed.
Brackets ; Of ; Multiply and Divide ; Add and Subtract
Inverse operation The opposite operation that would ‘undo’ the last operation.
Addition and Subtraction are the inverse of each other.
Multiplication and Division are the inverse of each other.
Factors A number that can go into another number without a remainder.
Multiples A multiple of a number is that number multiplied by a natural number.
Commonly known as ‘times tables’.
Prime Numbers A number that has only two factors – one and itself.
The first five prime numbers are: 2 ; 3 ; 5 ; 7 ; 11
Composite numbers A number that has more than two factors.
The first five composite numbers are: 4 ; 6 ; 8 ; 9 ; 10
Highest Common factor (HCF):
The highest factor that can go into two or more numbers that is common to both of them.
For examples: the HCF of 10 and 15 is 5.
Lowest Common Multiple (LCM):
The lowest multiple of two or more numbers that is common to both of them.
For example: the LCM of 8 and 6 is 24.
Commutative An operation that works even if the numbers are swopped around.
Example : 5 + 2 is the same as 2 + 5
*Addition and multiplication are commutative.
*Division and subtraction are NOT commutative.
*Associative An operation that works if you start anywhere in the question.
Example: 3 + 6 + 5
