1 Whole numbers
What is a whole number? The simple answer is ‘any number that does not include a fraction or decimal part’.
So for example, 3 is a whole number, but 3 or 3.25 are NOT whole numbers.
Numbers can be positive or negative.
Positive numbers can be written with or without a plus (+) sign, so 3 and +3 are the same.
Negative numbers always have a minus (–) sign in front of them, such as –3, –5 or –2.