When you need to communicate mathematical equations or formulas, you can do that directly on your Mac without pen and paper. Using OneNote, you can insert fractions, exponentials, logarithms, and other mathematical structures in your notes.
In this article
Insert and edit an equation

On your note, click where you want to insert the equation.

On the Insert tab, click Equation.

A placeholder Type equation here is inserted.

Type your equation.

When done, press ENTER on your keyboard.

If you want to edit it later, just click the equation.
Tip: Equations use the Cambria Math font by default, but you can always change the font later.
Insert math symbols in your equation

Click where you want to insert the symbol in the equation.

On the menu bar, click Edit > Emoji & Symbols.

If you cannot see the full Characters dialog box, click .

In the Characters dialog box, click Math Symbols.

Doubleclick the symbol you want to insert.
Tip: Add the frequently used symbols to your Favorites so you can find them quickly.
Create equation structures
If you need to use structures, such as fractions, superscripts, or subscripts, you can add those using the keyboard.

To use an equation structure, type a symbol in the equation and then press the SPACEBAR. You can use the following symbols:

To type inside the structure, click to select it.
More related info
You can insert simple mathematical equations in OneNote. If you need to insert a more complex equation or structure, such as a summation, an integral, or a matrix, create the equation in Word using the Equation function, and copy it to your notes. For instructions on inserting an equation in Word, see this article.