①338﹣338÷26×12
②102.7×3.4+102.7×6.6
③
④×[+(﹣75%)]
① ÷8+ ×
②101×6.9
①2.65×1.7+7.35×1.7
②36×( + )
③54.2- +4.8-1
④0.7÷[( - )×24]