Create better lessons quicker
5+7 - 12, 8+5 - 13, 9+2 - 11, 8+9 - 17, 9+9 - 18, \frac{30}{5} - 6, \frac{28}{4} - 7, \frac{18}{6} - 3, \frac{36}{4} - 9, \frac{14}{7} - 2, \frac{45}{5} - 9, \frac{32}{4} - 8, \frac{24}{4} - 6, \frac{8}{4} - 2, \frac{54}{6} - 9, \frac{20}{4} - 5, \frac{4}{2} - 2, \frac{16}{2} - 8, \frac{54}{6} - 9, \frac{15}{5} - 3,

by Swhite