Match each supplied equivalence to the correct conversion.

### The pairs | Item | Matches | Why | |---|---|---| | 1 teaspoon | 5 mL | This is the volume equivalence supplied in the material. | | 1 cup | 240 mL | This is the cup-to-millilitre equivalence supplied in the material. | | 1 inch | 2.5 cm | This is the length equivalence supplied in the material. | | Fahrenheit to Celsius | $C = (F - 32)\times 5/9$ | Subtract 32 and multiply by $5/9$ to convert from Fahrenheit to Celsius. | ### The concept The first three pairs are stated conversion factors. The temperature pair is a formula rather than a direct unit ratio. In either case, use the relationship in the direction that converts the given quantity into the requested unit. ### Terms - **Millilitre (mL)**: a metric unit of volume. - **Centimetre (cm)**: a metric unit of length. - **Fahrenheit (°F)**: a temperature scale. - **Celsius (°C)**: a temperature scale. ### Remember Check both the starting unit and the target unit before choosing a conversion relationship.