Imperial Units

# Imperial Units

Basic, GCSE(F),

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 foot (ft) = 12 inches (in)
1 yard (yd) = 3 feet (ft)

Mass:
1 pound (lb) = 16 ounces (oz)
1 stone (st) = 14 pounds (lb)

Capacity
1 gallon (gal) = 8 points (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.

## Examples

1. Convert 42 inches to feet and inches.

Answer: 3 feet 6 inches

feet-->inches
1x12
42÷12 = 3rem642

2. Convert 300 ounces to stones, pounds and ounces.

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

First convert the ounces to pounds:

pounds-->ounces
1x16
300÷16 = 18rem12300

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

stones-->pounds
1x14
16÷14 = 1rem416

Another inverse operation: 16 ÷ 14 = 1 remainder 4, so 1 stone 4 pounds. Include the 12 ounces from the first operation.