问题 解答题
下列各题能简算的要简算
8
9
-
5
16
÷
5
8

9
13
+
4
13
×
1
4

(29-30.6÷6.8)×1.2
5
6
-
1
8
+
1
12
)×24
1
9
×
3
5
+
2
5
÷9
1
5
+[(
2
5
+
1
3
)÷
5
6
].
答案

(1)

8
9
-
5
16
÷
5
8

=

8
9
-
5
16
×
8
5

=

8
9
-
1
2

=

7
18

(2)

9
13
+
4
13
×
1
4

=

9
13
+
1
13

=

10
13

(3)(29-30.6÷6.8)×1.2,

=(29-4.5)×1.2,

=24.5×1.2,

=29.4;

(4)(

5
6
-
1
8
+
1
12
)×24,

=

5
6
×24-
1
8
×24+
1
12
×24,

=20-3+2,

=19;

(5)

1
9
×
3
5
+
2
5
÷9,

=

1
9
×
3
5
+
2
5
×
1
9

=

1
9
×(
3
5
+
2
5
),

=

1
9

(6)

1
5
+[(
2
5
+
1
3
)÷
5
6
],

=

1
5
+[
11
15
÷
5
6
],

=

1
5
+[
11
15
×
6
5
],

=

1
5
+
22
25

=

27
25

问答题 简答题
问答题 简答题