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What is a natural number?
Any positive whole number or zero
What is an application of natural numbers?
Counting items
What is the symbol for natural numbers?
N
What is an integer number?
Any whole number, positive or negative, including zero
What is the symbol for integer numbers?
Z
What is a rational number/quotient?
Numbers which can but do not necessarily have a fractional part
→ Can be positive or negative, including zero
→ A number is rational if it can be written exactly as a fraction
What is the symbol for rational numbers?
Q
What is an irrational number?
Any number which cannot be written exactly as a fraction
→ e.g. surds
What is the symbol of irrational numbers?
No symbol
What is a real number?
Any possible real world quantity
→ Includes all numbers of previous sets
What is an application of real numbers?
Measuring
What is the symbol for real numbers?
R
What is an ordinal number?
Integers to describe the numerical positions of objects
