A Simple Interpretation of Quantity Calculus

A simple interpretation of quantity calculus is given. Quantities are described as two-place functions from objects, states or processes (or some combination them) into numbers that satisfy the mutual measurability property. Quantity based on a notational simplification concept quantity. key element we consider units to be intentionally unspecified measures exactly specified processes. This combines all advantages calculating with numerical values (since quantities numbers, can do them everything numbers) and standardly conceived (calculus invariant choice has built-in dimensional analysis). also shows standard metaphysics mathematics their magnitudes not needed for calculus. At end article, arguments given defined here pivotal in understanding quantitative approach nature. As an application this calculus, easy proof homogeneity physical laws