①12×14.5+12×550%
②35×9.9
③32×2.5×12.5
④12÷[(2.2-40%)×]
①3.5×+5.5×80%+0.8
②(9.88+0.24÷2)×7.6
③36÷[1-()]
④
⑤12.38+5.76-2.38+4.24