You can multiply a range of cells by the same number in Excel by using an absolute cell reference in a formula and then dragging the formula down. Here's how:
Steps:
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Enter the constant number: Place the number you want to multiply by into a cell (e.g., cell C2).
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Create the formula: In the first cell where you want the result (e.g., cell B2), type
=A2*$C$2and press Enter.A2is the cell containing the first number you want to multiply.*is the multiplication operator.$C$2is the cell containing the constant number. The$symbols before both the column letter (C) and the row number (2) create an absolute reference. This means that when you copy the formula, the reference to cell C2 will not change.
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Copy the formula down: Click on the bottom-right corner of cell B2 (the fill handle - it looks like a small square). When your cursor turns into a plus sign (+), click and drag down to apply the formula to the other cells in the column.
Example:
| Cell | Value | Formula | Result | Explanation |
|---|---|---|---|---|
| A2 | 5 | =A2*$C$2 |
10 | Multiplies the value in A2 (5) by the value in C2 (2). |
| A3 | 10 | =A3*$C$2 |
20 | Multiplies the value in A3 (10) by the value in C2 (2). The $ in $C$2 ensures it still refers to the same cell when copied. |
| A4 | 15 | =A4*$C$2 |
30 | Multiplies the value in A4 (15) by the value in C2 (2). |
| C2 | 2 | (Constant Value) | This cell holds the constant number you're multiplying by. |
Alternative Methods (Less Common):
While the above method is the most straightforward and common, here are a couple of alternative approaches:
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Paste Special (Multiply): You could enter the constant into an empty cell, copy that cell, select the range of cells you want to multiply, right-click, choose "Paste Special," select "Multiply" under "Operation," and click "OK." This method changes the values in the original cells, which may not be desirable.
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Using an Array Formula (Advanced): While possible, using array formulas for this simple task is overkill.
The absolute cell reference method is generally the best practice because it preserves the original data and allows you to easily change the constant multiplier in one cell.
