Explanation:
The toolbar that allows you to enter values and formulas is the Formula Bar.

Formula Bar:
The formula bar is located at the top of the spreadsheet software, such as Microsoft Excel or Google Sheets. It is a toolbar that displays the contents of the currently selected cell. This toolbar allows you to enter or edit values and formulas in the cells.

Entering Values:
When you select a cell, the value of that cell is displayed in the formula bar. You can directly enter a value into the selected cell by typing it in the formula bar and pressing the Enter key. For example, if you want to enter the value 10 in a cell, you can select the cell, type "10" in the formula bar, and press Enter. The value 10 will then be entered into that cell.

Entering Formulas:
In addition to entering values, the formula bar also allows you to enter formulas. Formulas are used to perform calculations in spreadsheet software. To enter a formula, you start by typing an equals sign (=) in the formula bar, followed by the formula itself. For example, if you want to add the values in cells A1 and A2, you can select a different cell, type "=A1+A2" in the formula bar, and press Enter. The formula will then be calculated, and the result will be displayed in the selected cell.

Advantages of the Formula Bar:
1. Accuracy: The formula bar ensures accuracy in entering values and formulas by providing a clear and separate space for input.
2. Editing: The formula bar allows easy editing of values and formulas. You can simply click on the formula bar, make changes, and press Enter to update the cell.
3. Visibility: The formula bar provides a larger space to view and edit long formulas, making it easier to work with complex calculations.
4. Functionality: The formula bar also provides access to various functions and features of the spreadsheet software, such as auto-fill, cell formatting, and more.

In conclusion, the formula bar is an essential toolbar that allows you to enter values and formulas accurately and efficiently in spreadsheet software. It provides a dedicated space for input, editing, and visibility of the contents of the selected cell.