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计算下列各题,能简算的要简算.(1)(3+34÷34+3)-(7×16÷7×16)(2)58×691617+50×18+18×517(3)(815+157+611)÷(415+67+311)(4)25×[35÷(35+925)](5)28×[1÷(3110-3.09)]÷1.4(6)[19.08

题目详情
计算下列各题,能简算的要简算.
(1)(3+
3
4
÷
3
4
+3)-( 7×
1
6
÷7×
1
6
)  
(2)
5
8
×69
16
17
+50×
1
8
+
1
8
×
5
17
(3)(
8
15
+1
5
7
+
6
11
)÷(
4
15
+
6
7
+
3
11
 )  
(4)
2
5
×[
3
5
÷(
3
5
+
9
25
)]
(5)28×[1÷(3
1
10
-3.09)]÷1.4     
(6)[19.08+(3.2-0.299÷0.23)]×
1
4
▼优质解答
答案和解析
(1)(3+
3
4
÷
3
4
+3)-( 7×
1
6
÷7×
1
6
)  
=(3+1+3)-
1
36

=7-
1
36

=6
35
36


(2)
5
8
×69
16
17
+50×
1
8
+
1
8
×
5
17

=5×69
16
17
×
1
8
+50×
1
8
+
1
8
×
5
17

=(5×69
16
17
+50+
5
17
)×
1
8

=(5×70-5×
1
17
+50+
5
17
)×
1
8

=400×
1
8

=50;

(3)(
8
15
+1
5
7
+
6
11
)÷(
4
15
+
6
7
+
3
11
) 
=2×(
4
15
+
6
7
+
3
11
 )÷(
4
15
+
6
7
+
3
11
) 
=2;

(4)
2
5
×[
3
5
÷(
3
5
+
9
25
)]
=
2
5
×[
3
5
×
25
24
]
=
2
5
×
5
8

=
1
4


(5)28×[1÷(3
1
10
-3.09)]÷1.4    
=28×[1÷0.01]÷1.4  
=28×100÷1.4
=2800÷1.4
=2000;

(6)[19.08+(3.2-0.299÷0.23)]×
1
4

=[19.08+(3.2-1.3)]×
1
4
 
=[19.08+1.9]×
1
4

=20.98×
1
4

=5.245.