In this module, you can study how to add fractions having like or unlike denominators (the bottom number).
When adding fractions where the bottom numbers (the denominators) are the same, you add the top numbers only (the numerators) to find the answer.
For example 
+ 
= 
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 (%)