Typing Fractions
Typing 
Start with the expression that will be the numerator.
Create a built-up fraction by pressing the Control and / keys at the same time. The placeholder in the denominator is already selected.
Move the insertion point out of the fraction by pressing the Control key and the Space bar at the same time.
Typing 
Start with the expression that will be the numerator.
Create a built-up fraction by pressing the Control and / keys at the same time. The placeholder in the denominator is already selected.
Move the insertion point out of the fraction by pressing the Control key and the Space bar at the same time.
Once the insertion point is out of the fraction, you can continue typing.
Typing 
Start with the expression that will be the numerator.
Create a built-up fraction by pressing the Control and / keys at the same time. The placeholder in the denominator is already selected.
Continue typing in the denominator and then move out of the fraction.
Move the insertion point out of the fraction by pressing the Control key and the Space bar at the same time.
Typing 
Create a built-up fraction with Ctrl+/. The numerator and denominator contain placeholders; the one in the numerator is selected.
Type an expression in the numerator.
Select the placeholder in the denominator by pressing the Tab key. (Alternatively, you can select the placeholder by clicking it or dragging.)
Get out of the fraction by pressing the Control key and the Space bar at the same time.
Another Way of Typing 
Start with the expression that will be the numerator.
Select the expression. (You can select by dragging, by pressing Ctrl+. repeatedly, or by clicking the expression repeatedly.)
Create a built-up fraction by pressing Ctrl+/.
Get out of the fraction by pressing the Control key and the Space bar at the same time.
