In this module, you can study how to add and subtract fractions with like denominators and also with unlike denominators.
When you change a denominator (the bottom part) of a fraction, you must also change the numerator (the top part) to keep the fraction worth the same amount.
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 (%)