Comparing Quantities. A ratio is a comparison between two or more like quantitiesin the same units. This suggests that a ratio can be simplified by dividing its terms by the same number. Therefore: This suggests that the terms of a ratio can be multiplied by the same number. Quantity is a property that can exist as a multitude or magnitude. Quantities can be compared in terms of "more", "less", or "equal", or by assigning a numerical value in terms of a unit of measurement. Quantity is among the basic classes of things along with quality, substance, change, and relation. Some quantities are such by their inner nature (as number), while others are functioning as states (properties, dimensions, attributes) of things such as heavy and light, long and short, broad and narrow, small and great, or much and little. Two basic divisions of quantity, magnitude and multitude, imply the principal distinction between continuity (continuum) and discontinuity.