pieces of paper
The plural of a piece of paper is "pieces of paper."
The plural of writing paper is writing papers. As in "we need more writing papers".
Yes, paper is a countable noun. It can be used in both singular and plural forms, such as "a piece of paper" or "several papers."
The plural form for 'piece of advice' is pieces of advice.
pieces
you have to look at the piece of paper and the things that are on the piece of paper follow it
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!
Paper generally regarded as plural, meaning that it is more than one. The singular would be 'a piece of paper.' However, a collection of paper that makes up a newspaper could be called a paper - such as, 'did the paperboy deliver the paper yet?' And an article written for a medical or scientific journal might informally be called a paper. So, it would be 'a lot of paper.'
Folding the piece of paper does not change the thickness of the piece of paper. However, the thickness of the folded paper would be twice that of the original sheet of paper.
A piece of paper or thin piece of metal will provide protection from?
It was the piece of paper that declared war or the 2. It was the piece of paper that declared war or the 2. It was the piece of paper that declared war or the 2.
Both. The use of the word paper for the substance on which you for example write, draw, or to wrap things is uncountable. Units of paper are expressed as sheets of paper, rolls of paper, stacks of paper, etc. The use of the word to describe an intellectual piece of work is countable.