A slate
Paper in Egyptian times was called Papyrus's.
the print and the color
Perforated
a bill
The "piece of paper" is what is called 'virtual' it is a representative of a real piece of paper but is actually an image of one. The program that presents you with this virtual paper and allows you to type on it (an print what you have typed as a real bit of paper) is called a "word processing" application. This application must be present (installed) on your computer for you to be able to do this.
It is worth 50 cents. That is why it is called a 50 cent piece.
The plural of a piece of paper is "pieces of paper."
it is called copying
you have to look at the piece of paper and the things that are on the piece of paper follow it
Mass of a substance is usually measured in standard unit called kilogram (kg) . Hence unit of mass of a piece of pad paper will be in kg.
Card
The answer depends on the piece of paper. You can cut it in half lengthways: it will still be a piece of paper but its width will be half as large!