①0.125×4.8×0.5
②7.2÷0.24÷0.3
③8.45×10.1-0.845
④6-5.4÷0.9×0.12
⑤0.26×2.5+0.74
⑥6.6×6.8+( ) (编成能简便计算的算式,再计算)