Use a simple formula that references the two cells the data is in and adds them together. So if one price was in cell A2 and the other price in cell B2, then you could type this into an empty cell to add the two prices:
=A2+B2
There is no definitive answer to that. Pages can be of different sizes, margins can be different sizes and the sheet can be printed in different scales. A full worksheet would run to thousands of pages, but users rarely go anywhere close to using the full size of a worksheet.
A detail sheet in Excel is a place where common items are grouped together. An example would be sales for a company detailing each product and how many were sold of each.
To reference an Excel sheet in a formula or function, you can use the sheet name followed by an exclamation mark (!) before the cell reference. For example, to reference cell A1 in a sheet named "Sheet1", you would write "Sheet1!A1" in the formula.
There is no single answer to that. There are many factors that it will depend upon. Different versions of Excel have different sizes of Sheets. You can adjust margins in Excel and also re-scale pages. Typically you would only print the active part of the sheet, so it would also depend on how much you are printing. Also the way you have your data laid out will have an effect, as will if you are printing portrait or landscape.
Insert the sheet name and an exclamation point before the cells you would like to add:=Sheet1!A1+Sheet2!A1
As a workbook can have multiple sheets there are occasions where you would be referring to data on different sheets from each other. It is then a requirement that you specify which sheet you are referring to. So there needs to be a sheet reference along with a cell reference. This is done by having the name of the sheet followed by an exclamation mark, after which you can have the cell. The cell A6 on Sheet2 would be referred to as follows: Sheet2!A6
lower("WHAt evEr") would return "what ever"
That would depend on where your prices are on your sheet and how many you have. You could use the + to add some together, or you could use the SUM function. Say you had just four prices, in cells C2, C3, C4 and C5, then you could do it in either of these ways: =C2+C3+C4+C5 =SUM(C2:C5) You would have to adapt that to your own requirements.
Use the name of a sheet, followed by an exclamation mark and a cell reference. The following would take the value in cell C21 on Sheet2 and put it wherever the formula is typed. =Sheet2!C21
A detail sheet in Excel is a place where common items are grouped together. An example would be sales for a company detailing each product and how many were sold of each.
You can embed as many as you want on a worksheet. Only your computer's memory would limit it. A chart sheet can only have one chart.
They are two different applications. Oracle is a database and Excel is a spreadsheet. So it will depend on what it is you are intending to do that determines which application you would use. Spreadsheets are for numerical analysis and manipulation. Databases are for dealing with lists of data and processing them. There are things both can do.