Transfer numbers from one work sheet to anoth

Hello, i have woork book with a cost sheet on page 1 and a quote on page 2 a bill of materials on page 3 and so on.I wish to set the work book up so that when I type say the date or a job number into a cell on page 1 it must also appear in page two and three in the designated cell on that work sheet.How do I do it?