Ways to open the Format Cell Dialog Box:

1. Using Shortcut Keys:
- Pressing "Ctrl + 1" on the keyboard will open the Format Cells dialog box.

2. Right-Clicking:
- Right-click on the cell or range of cells you want to format.
- Select "Format Cells" from the context menu that appears.

3. Using the Ribbon:
- Click on the "Home" tab in the Excel ribbon.
- In the "Number" group, click on the dialog box launcher icon (small square with an arrow pointing to the right) in the bottom right corner.
- This will open the Format Cells dialog box.

4. Using the Format Cells Option:
- Select the cell or range of cells you want to format.
- Go to the "Format" menu in the top navigation bar.
- Choose "Format Cells" from the dropdown menu.

5. Using the Name Box:
- Click on the Name Box (located next to the formula bar) and enter the cell reference of the cell you want to format.
- Press Enter.
- Right-click on the selected cell and choose "Format Cells" from the context menu.

These are the various ways to open the Format Cells dialog box in Excel, giving you access to a wide range of formatting options for your data.