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计算下面各题.245÷7×6(70+60×2)×9(264-24)÷(51-39)420÷[(205-198)×4]32+768÷(30-6)

题目详情
计算下面各题.
245÷7×6  
(70+60×2)×9        
(264-24)÷(51-39)
420÷[(205-198)×4]
32+768÷(30-6)
▼优质解答
答案和解析
(1)245÷7×6
=35×6
=210;
  
(2)(70+60×2)×9
=(70+120)×9
=190×9
=1710;
        
(3)(264-24)÷(51-39)
=240÷12
=20;
(4)420÷[(205-198)×4]
=420÷[7×4]
=420÷28
=15;
(5)32+768÷(30-6)
=32+768÷24
=32+32
=64.