301﹣81×35÷27 (52.05+5.1)÷9﹣2.9
5.4 +8 =
0.6×6 =
1.26×(4.8﹣1.8)÷6.3 ×34+13÷+ 4÷[-(-)]
①836-192÷8×16
②1.4÷(1.4+0.7)
③0.8×0.4×12.5×0.25
④ ÷6+ ÷20
⑤14×19×( + )
⑥ ÷[( + )÷ ]
①360÷15-2.5×1.6
②6.54-3.84-0.16+2.55
③ ÷ + ÷
④ ×( + )+
⑤ -( ÷ - )
⑥ ×[( - )÷ ]
①397+180÷15
②4.4×0.5-80÷100
③73×9.9+7.3
④ ×(1- + )
⑤75×[( - )÷ ]