You can get, for example, -5°c 6°c 3°c And others, there is plenty !
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Negative numbers can be used for weather, when we talk about temperature that is below zero.
Actually it is. Well, it depends what definition of "whole number" you use. Some definitions include only positive integers, some use it as a synonym of "integers". Therefore, due to this ambiguity, the phrase "whole numbers" would better be avoided in math. Rather, use words or phrases like "integers", "positive integers", or "non-negative integers", to convey the exact meaning, without ambiguity.
Personally, I use them to count with.
Add the numerals and keep the sign. Examples: +9 + +3 = +12 -5 + -6 = -11 Just in case this is your next question: to add integers with different signs, subtract the numerals, and use the sign of the larger number.
The natural numbers.