On top of screen go to
Edit
then
Select All
Assuming you're using Microsoft Excel, select the entire column by clicking and dragging with the mouse, then press the AutoSum button (looks like Σ).
Not entirely, but you can use a mouse to select ranges you include in a formula.
i have no clue
Can you be more specific about what are you trying to do and on what device? There are two methods to move around in your document, If you are using a mouse, you can move around each page of a document by scrolling up and down using the "Scrolling wheel" on mouse. If you are using a keyboard, you can move around using the "Page Up and Page Down" arrow keys on your keyboard.
When you are writing something you are using the keyboard and occasionally the mouse.. for example something in a word document.
You can type it in or select the range using the mouse or keyboard.
To select and highlight text, you can use the keyboard command Ctrl + A (or Command + A on Mac) to select all text in a document or field. To select specific text, click and drag your mouse over the desired text, or hold the Shift key while using the arrow keys to highlight text character by character or line by line.
Printer
Two common ways to select text are by using a mouse or keyboard shortcuts. With a mouse, you can click and drag to highlight the desired text. Alternatively, using keyboard shortcuts like holding the Shift key while using the arrow keys allows you to select text without a mouse. Both methods enable users to efficiently highlight and manipulate text for editing or formatting purposes.
It is called the "mini toolbar."
by clicking grey are on the left
Cells can be selected by the mouse or the keyboard. Pressing and hold the left mouse button and dragging across cells will select them. Pressing and holding the shift hey and then using the cursor keys can select cells. The F8 key can also be used to select cells.