How to keep one variable constant with other one changing with row in excel

Question

Use this form:

=(B0+4)/$A$0

The $ tells excel not to adjust that address while pasting the formula into new cells.

Since you are dragging across rows, you really only need to freeze the row part:

=(B0+4)/A$0

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Keyboard Shortcuts

Commenters helpfully pointed out that you can toggle relative addressing for a formula in the currently selected cells with these keyboard shortcuts:

• Windows: f4
• Mac: CommandT

There are two kinds of cell reference, and it's really valuable to understand them well.

One is relative reference, which is what you get when you just type the cell: A5. This reference will be adjusted when you paste or fill the formula into other cells.

The other is absolute reference, and you get this by adding dollar signs to the cell reference: $A$5. This cell reference will not change when pasted or filled.

A cool but rarely used feature is that row and column within a single cell reference may be independent: $A5 and A$5. This comes in handy for producing things like multiplication tables from a single formula.

To make your formula more readable, you could assign a Name to cell A0, and then use that name in the formula.

The easiest way to define a Name is to highlight the cell or range, then click on the Name box in the formula bar.

Then, if you named A0 "Rate" you can use that name like this:

=(B0+4)/(Rate)

See, much easier to read.

If you want to find Rate, click F5 and it appears in the GoTo list.

You put it as =(B0+4)/($A$0)

You can also go across WorkSheets with Sheet1!$a$0