How many 0.5x0.5x0.5 cubes are in a 5x5x5 cube?

To find out how many 0.5x0.5x0.5 cubes fit into a 5x5x5 cube, first calculate the volume of each cube. The volume of the 5x5x5 cube is 125 cubic units, while the volume of a 0.5x0.5x0.5 cube is 0.125 cubic units. Dividing the volume of the larger cube by the volume of the smaller cube gives 125 / 0.125 = 1000. Therefore, 1000 of the 0.5x0.5x0.5 cubes can fit into the 5x5x5 cube.