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脱式计算.(390+30)÷7340÷5÷3265+675÷572×3÷4416÷2×4407+521-469.

题目详情
脱式计算.
(390+30)÷7           
340÷5÷3            
265+675÷572×3÷4            
416÷2×4            
407+521-469.





▼优质解答
答案和解析
(1)(390+30)÷7
=420÷7
=60;
           
(2)340÷5÷3
=68÷3
=22.
6

            
(3)265+675÷5
=265+135
=400;

(4)72×3÷4
=216÷4
=54;
            
(5)416÷2×4
=208×4
=832;
            
(6)407+521-469
=928-469
=459.
6
•••666;
            
(3)265+675÷5
=265+135
=400;

(4)72×3÷4
=216÷4
=54;
            
(5)416÷2×4
=208×4
=832;
            
(6)407+521-469
=928-469
=459.