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# Num – Numeric Types

The `Num` class supports basic numeric methods for its types:

```haskell
(+), (-), (*) :: a -> a -> a
negate, abs, signum :: a -> a
```

Notice that division is not included here because of how it is handled differently for integers floating-point numbers, as we will see in the next two classes (`Integral` and `Fractional`). The `signum` method returns the sign of a number (-1 for negative numbers and 1 for positive ones).