①2.75-0.75×1.2
②0.64×1.5÷0.32
③30-7.38÷3.6×2
④3.14×0.32-3.14×0.22
⑤2.4÷0.15+2.4÷0.25
⑥（0.9-0.15×0.6）÷0.01
