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脱式计算.68×35-408÷242700×(506-499)÷900138+12÷4-3435×56+16×35.

题目详情
脱式计算.
68×35-408÷24              
2700×(506-499)÷900
1
3
8
+
1
2
÷4-
3
4
                      
3
5
×
5
6
+
1
6
×
3
5
▼优质解答
答案和解析
(1)68×35-408÷24 
=2380-17
=2363;
             
(2)2700×(506-499)÷900
=2700×7÷900
=18900÷900
=21;

(3)1
3
8
+
1
2
÷4-
3
4
 
=1
3
8
+
1
2
×
1
4
-
3
4
 
=1
3
8
+
1
8
-
3
4
 
=
3
4

                
(4)
3
5
×
5
6
+
1
6
×
3
5

=
3
5
×(
5
6
+
1
6

=
3
5
×1
=
3
5