问题 解答题
计算下面各题(能简算的要简算)
1
3
+
1
4
)÷(1-
1
8

5
18
+
15
16
×
4
5
+
1
4

5
7
×
5
16
+
11
16
×
5
7

1
3
-
1
5
÷
2
7
×
3
8
答案

(1)(

1
3
+
1
4
)÷(1-
1
8
),

=

7
12
÷
7
8

=

2
3

(2)

5
18
+
15
16
×
4
5
+
1
4

=

5
18
+
3
4
+
1
4

=

5
18
+1,

=1

5
18

(3)

5
7
×
5
16
+
11
16
×
5
7

=(

5
16
+
11
16
)×
5
7

=1×

5
7

=

5
7

(4)(

1
3
-
1
5
÷
2
7
×
3
8

=

2
15
÷
2
7
×
3
8

=

7
15
×
3
8

=

7
40

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