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按照指定的步数计算下面各题.459×(76-50)==(105×12-635)÷25===864÷[(27-23)×12]===987÷(345-298)×65==240-240÷20×5==408÷[827-(324+452)]===

题目详情
按照指定的步数计算下面各题.   
459×(76-50)
=
=
(105×12-635)÷25  
=
=
=
864÷[(27-23)×12]
=
=
=
987÷(345-298)×65 
=
=
240-240÷20×5
=
=
408÷[827-(324+452)]
=
=
=
▼优质解答
答案和解析
(1)459×(76-50)
=459×26
=11934

(2)(105×12-635)÷25  
=(1260-635)÷25
=625÷25
=25

(3)864÷[(27-23)×12]
=864÷[4×12]
=864÷48
=18

(4)987÷(345-298)×65 
=987÷47×65
=21×65
=1365

(5)240-240÷20×5
=240-12×5
=240-60
=180

(6)408÷[827-(324+452)]
=408÷[827-776]
=408÷51
=8