Question

what is the shortcut key to add multiple number at once​

Answer 1

Answer:

Select a cell for the sum then press and hold down the Alt key on the keyboard.

Press and release the equal sign (=) on the keyboard without releasing the Alt key.

Release the Alt key. The SUM function appears within the active cell with the Insertion point or cursor located between a pair of empty round brackets. The brackets hold the function's argument (the range of cell references or numbers to be summed).

Enter the function's argument:

Using point-and-click with the mouse to enter individual cell references

Using click-and-drag with the mouse to highlight a contiguous range of cells

Typing the numbers or cell references manually

After you've entered the argument press the Enter key on the keyboard to complete the function. The answer will appear in the cell containing the function. When you click that cell, the completed SUM function appears in the formula bar above the worksheet.

Speed up data entry by inputting individual cells and cell ranges correctly:

Separate individual cell references entered by typing or pointing with commas.

For a range of cell references entered by typing, you can separate the start and end point cell references with a colon.