one thin flat object; one sheet
one thin flat object; one sheet
two sheets (pieces) (of paper)
three flat objects (sheets of paper, pieces of cloth, etc.); cutting a fish into two boneless fillets and a piece with the skeleton
two sheets (pieces) (of paper)
several sheets (flat objects)
three flat objects (sheets of paper, pieces of cloth, etc.)
the number of flat things; win-loss difference which influences the ranking of wrestlers
1000 sheets (of paper); many pages; book tripe; bible tripe; leaf tripe