There are 8 Ounces in a cup. Therefore the Tablespoon is 1/2 Ounce. A teaspoon is 1/3 of a tablespoon or 1/6 of an ounce. Remember this, 128 ounces in a gallon. 1/2 of a gallon is the next stop down = 64. 1/2 of that is a quart = 32 ounces. 1/2 of that is a pint = 16 ounces.
The difference between US Letter and Legal Paper sizes and international A4 is discussed here, however it is important to say that Letter is effectively the equivalent to A4 size in the USA.
Common paper sizes in America, which youâre probably familiar with, are Letter paper size (8.5 x 11 in), Legal paper size (8.5 x 14 in) and Tabloid paper size (11 x 17 in). Less common sizes that youâll find dimensions for in the chart are Junior Legal, Ledger and Government Letter.