①26×35+5.4÷0.27
②0.6×49+52× -60%
③
④18.25-(6.45- )
⑤( )×7÷15
⑥(5.6- ×19.2)÷
①15÷2.5-1.34
②
①+++
②(-+)×24
③1.5×+8.5×
④4×0.8×2.5×12.5
⑤25××40%×
⑥÷[(+)×]