MATH COMPARISON is a term used to describe the COMPARISON of two or more mathematical values. A RATIO is a type of MATH COMPARISON where two or more values are compared in terms of their relative size. Ratios are often expressed as a fraction, with the numerator representing one value and the denominator representing the other. Ratios can be used to compare quantities, such as the RATIO of apples to oranges in a basket, or to compare measurements, such as the RATIO of inches to centimeters.