Answer

To multiply all cells by a number in Excel, use a helper cell and the Paste Special feature. This method updates values in bulk and maintains accuracy across the entire range.

Using Paste Special (Multiply)

1. Enter the number that you want to multiply by in an empty cell.

2. Copy that cell with Ctrl + C on Windows or Command + C on Mac.

3. Highlight the full range that needs multiplication.

4. Open the Paste Special menu.

   • Windows: Use Ctrl + Alt + V.

   • Mac: Use Command + Control + V.

5. Select Multiply in the Operation section.

6. Click OK to apply the multiplication across the selected cells.

Using a Formula to Multiply Each Cell

This method creates a new range that contains the result instead of replacing the original data.

1. Select a new empty column.

2. Enter the formula structure:

   $=A1\ast 5$
   

   Replace A1 with the first cell in your range and replace 5 with your multiplication number.

3. Press Enter to calculate the first result.

4. Fill down to the rest of the cells using the fill handle.

5. Replace the original values by copying the new values, then right-click the original range and select Paste Values.

Using Absolute References for Structured Multiplication

Absolute references lock the multiplier so that the reference stays fixed.

1. Place the multiplier in an empty cell, for example B1.

2. Enter the formula:

   $=A1\ast \$B\$1$
   

3. Press Enter.

4. Drag the fill handle to cover the full range that needs multiplication.

5. Copy the calculated results and paste them as values if you want to overwrite the source data.

When to Use Each Method

1. Use Paste Special when you need to replace the original data.

2. Use formulas when you want a separate range for the multiplied values.

3. Use absolute references when you want to maintain a single multiplier that can be updated later.

Key Terms for Optimization

• Multiply cells

• Paste Special Multiply

• Excel cell operations

• Bulk multiplication

• Absolute cell reference

• Excel productivity techniques

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