Imperial Units

## Imperial Units

Imperial Units have a number of different units for each type of measurement. There is no standard relationship between the different units. The abbreviations are is shown in brackets.

 Length 1 mile = 1760 yards (yds) 1 yard (yd) = 3 feet (ft) 1 foot (ft) = 12 inches (in) Mass 1 ton = 2240 pounds (lbs) 1 ton = 160 stones (sts) 1 stone (st) = 14 pounds (lbs) 1 pound (lb) = 16 ounces (oz) Capacity 1 gallon (gal) = 8 pints (pt)

To convert between different units, draw a small table with the conversion on the first line, and the amount to be converted on the second. Then determine whether to multiply or divide during conversion.

## Example 1

Convert 42 inches to feet and inches.

Write the conversion for feet to inches in a table. Below the inches conversion write the 24 inches that you want to correct. As the conversion is going from a larger number to smaller number, it is a division.

 feet --> inches 1 x 12 42÷12 = 3rem6 42

## Example 2

Convert 300 ounces to stones, pounds and ounces.

First convert the ounces to pounds:

 pounds --> ounces 1 x 16 300÷16 = 18rem12 300

An inverse operation: 300 ÷ 16 = 18 remainder 12, or 18 pounds 12 ounces. Put the 12 ounces to one side and convert the 18 pounds to stones:

 stones --> pounds 1 x 14 18÷14 = 1rem4 18

Another inverse operation: 18 ÷ 14 = 1 remainder 4, so 1 stone 4 pounds.

Include the 12 ounces from the first operation.

1 stone 4 pounds 2 ounces (1st 4lb 2z).

Answer: 1 stone, 4 pounds, 12 ounces (1st 4lb 12oz)