问题 解答题
怎样算简便就怎样算.
5
6
×
6
5
-
9
10
÷
9
5
4-
5
11
-
7
11
1
8
×58+
1
8
×41+
1
8
4
5
×
4
7
×
5
4
-
1
2
4
5
×
5
6
+
2
5
÷
3
5
4
5
÷[(
5
8
-
1
2
)÷
5
8
].
答案

(1)

5
6
×
6
5
-
9
10
÷
9
5

=1-

1
2

=

1
2

(2)4-

5
11
-
7
11

=4-(

5
11
+
7
11
),

=2

10
11

(3)

1
8
×58+
1
8
×41+
1
8

=

1
8
×(58+41+1),

=

1
8
×100,

=12.5;

(4)

4
5
×
4
7
×
5
4
-
1
2

=

4
7
-
1
2

=

1
14

(5)

4
5
×
5
6
+
2
5
÷
3
5

=

2
3
+
2
3

=

4
3

(6)

4
5
÷[(
5
8
-
1
2
)÷
5
8
],

=

4
5
÷[
1
8
×
8
5
],

=

4
5
×5,

=4.

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