The temperature of a fridge or a bank overdraft
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Real numbers are numbers that exist from negative infinity to positive infinity and everything in between. real numbers consist of every number you are used to. Imaginary numbers are numbers that aren't used in conventional math (such as i)
Exponents are negative numbers. This is used in math a lot.
Negative numbers are often used when there are opposites; in this case, one of the opposites is assigned positive numbers, the other, negative numbers. For example, you might:* Use positive numbers for positions above sea level, and negative for below sea level. * Use positive numbers for money you have in your bank account; negative numbers for money you owe others. * Use positive numbers for northern latitudes, and negative numbers for southern latitudes. Or vice versa. * There are lots of other situations where opposites are involved, but you probably get the idea.
You use positive numbers all the time, like in a store. But negative numbers are used when you're in debt. The more money you owe, the more you're in debt, the lower the numbers go. Also in games where you can have points deducted, sometimes you may end up with -5 points.
The numbers called that are used in exponents can be called as a power of a number. The power or exponent can be positive , negative , zero .