A gross of pencils is 144 pencils.
The plural form of the noun pencil is pencils.The plural possessive form is pencils'.Example: I enjoy choosing from the pencils' colors.
288 pencils/36 boxes = 8 pencils per box.288 pencils/36 boxes = 8 pencils per box.288 pencils/36 boxes = 8 pencils per box.288 pencils/36 boxes = 8 pencils per box.
you use "of" with disposed
The celts did not have pencils.
Pencils
A gross is 144. So you would have 144 pencils.
Map pencils are similar to colored pencils, but are widely viewed as inferior.
On your chest
12 of them
pencils such as lead pencils
they are mechanical pencils