Typically you will need four stamps. The first ounce will go for the standard first class postage rate. The next three ounces will go for a reduced rate. Currently that would be 45 cents for the first ounce and 20 cents each of the others for a total of $1.05.
As the name implies, it would have eight stamps. It can be 4 by 2 or 2 by 4, usually depending on the stamps, particularly if there are four different designs on the same sheet.
A plate block is a block of stamps from the edge of the sheet which shows the plate or cylinder from which the stamps were printed.
Stamps are printed using metal plates. The plates are marked with a number on the margins. A plate block consists of the stamps adjacent to that number in pairs, usually four or six stamps.
how many first class stamps does it take to mail a 4 oz letter and package
4 stamps
A single page of a book of postage stamps is referred to as a pane. A booklet pane may include slogan stamps (Use Zip Code) that are there. Specific panes are worth more than others and are listed separately in specialty catalogs.
4
22 stamps
4
There are many different groupings of stamps: An album A stamp collection A stamp exhibit A sheet of stamps - a complete sheet as issued by the post office A pane of stamps - A booklet page A block of stamps - multiples that are still attached A pair of stamps - Two connected, often used with coil stamps A strip of stamps - More than two connected coil stamps
4
Round about 4 stamps. :)