Apple Numbers '09 - Manual (Page 230)

Working with MathType
If you have MathType 6 installed, you can open it within Numbers and use it to
type mathematical expressions and equations. After you’ve created an equation in
MathType 6, you can manipulate the equation as an image in Numbers.
To type an equation using MathType 6 within Numbers:
1 Place the pointer where you want the equation to appear.
2 Choose Insert > MathType Equation.
MathType 6 opens and the equation “E=mc 2 ” appears.
3 Double-click the equation and type the equation you want using the MathType 6
application window and tools.
Refer to MathType 6 Help for specific instructions on how to use this product.
4 When you finish typing your equation, choose File > “Close and Return to Numbers,”
and then click Yes in the window that appears to save the equation.
5 Drag the equation wherever you want it on the sheet.
After you close MathType 6, Numbers treats the equation as an object that you can
reposition, resize, reorient, group, layer, or even mask like an image. However, if you
mask the equation, you must unmask it in order to edit it further.
6 To edit the equation, double-click it to open MathType 6 again.
230 Chapter 9 Working with Shapes, Graphics, and Other Objects