In this module, you can study what fractions are and some words associated with fractions.
The line in between the top number (numerator) and the bottom number (denominator) means 'divide.'
e.g. 
is the same as 0.25
On a calculator: 1 ÷ 4 = 0.25
Practice and study
0.00 min addition (+), subtraction (-), multiply (x), divide (÷)
1.19 min decimal point
2.43 min C, CE and backspace
4.19 min square, square root & fractions
6.17 min percentage (%)