Which of these is typically used to calculate a ratio?

To determine a ratio, the most fundamental mathematical operation involved is division. A ratio expresses the quantitative relationship between two amounts, showing how many times one value contains or is contained within the other. When calculating a ratio, you take one quantity and divide it by the other to derive the relationship.

For example, if you want to find the ratio of apples to oranges, you would divide the number of apples by the number of oranges. This division provides a simplified representation of the relationship, allowing for comparisons between the two quantities.

In the context of the choices provided, division represents the primary action taken to compute a ratio, while the other options focus on operations that do not directly define or derive a ratio in the same way.