342－420÷60
=342-7
=335


245＋255÷30
=245+8.5
=253.5


218－178＋82
=218＋82－178
=300-178
=122


5×182＋18×5
=5×（182+18）
=5×200
=1000


82×﹙351＋104﹚
=82×455
=37310




﹙522－477﹚×140
=45×140
=6300


9090÷15×20
=9090×20÷15
=181800÷15
=12120




63×63＋37×36  估計(jì)你寫錯(cuò)數(shù)字了,否則可以簡(jiǎn)便
=3969+1332
=5301


35×9÷3

=35×3
=105謝謝你別客氣
請(qǐng)采納395＋2508＋115,1382－82×15,688－112－88,153÷153＋219×3，﹙567－567﹚÷90,451＋549÷3－95,1000－645－345,125＋75×180,540－240÷12,246÷9×6,680－202＋98,234×98÷49,18×13×150,630×33÷21,2236÷13÷43,6300÷2÷63,888－﹙88＋77﹚，其他問(wèn)題需要我作答的請(qǐng)采納本題后點(diǎn)擊向我咨詢即可