问题描述:
(1)215+370+85 | (2)(569+468)+(432+101)+30 |
(3)363×56-263×56 | (4)360÷4÷9 |
(5)(83-47)×25+72×36+36×103 | (6)56×49+56 |
(7)420÷35 |
最佳答案:
(1)原式=215+85+370 =300+370 =670 | (2)原式=(569+101+30)+(432+468) =700+900 =1600 |
(3)原式=(363-263)×56 =100×56 =5600 | (4)原式=360÷(4×9) =360÷36 =10 |
(5)原式=(25+72+103)×36 =200×36 =7200 | (6)原式=56×(49+1) =56×50 =2800 |
(7)原式= 420÷7÷5 =60÷5 =12 |