①367+33=
②9﹣5.2=
③0.6×0.2=
④﹣=
⑤÷=
①0.4x=3.6
②x﹣x=70
③1.6:x=0.8:0.4
④=
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]
……