找出错误并在横线上改正。
They have few friends, have they?
____
下列关于①、②、③地形区名称,排序正确的是( )
1⊙3=1×4+3=7; 3⊙(﹣1)=3×4+(﹣1)=11;
5⊙4=5×4+4=24; 4⊙(﹣3)=4×4+(﹣3)=13.
请你想一想:5⊙(﹣6)=____