How do you slope a floor to a drain?

To slope a floor to a drain, first determine the drain's location and the required slope, typically 1-2% (1/8 to 1/4 inch per foot). Mark reference lines on the floor using a level or chalk line to ensure a consistent slope towards the drain. Then, adjust the subfloor or pour a sloped layer of concrete or mortar, ensuring that the high point is away from the drain and gradually lowers toward it. Finally, finish the surface to ensure proper drainage and a smooth transition.