题目内容

下面各题,怎样算简便就怎样算.
11×
11
4
-11÷
4
7
5
2
×10×
8
5
4
9
÷(
5
6
-0.2)
2-
6
13
÷
9
26
-
2
3
(1)11×
11
4
-11÷
4
7

=11×
11
4
-11×
7
4

=11×(
11
4
-
7
4
),
=11×1,
=11;

(2)
5
2
×10×
8
5

=(
5
2
×
8
5
)×10,
=4×10,
=40;

(3)
4
9
÷(
5
6
-0.2),
=
4
9
÷(
5
6
-
1
5
),
=
4
9
÷(
25
30
-
6
30
),
=
4
9
÷
19
30

=
4
9
×
30
19

=
40
57


(4)2-
6
13
÷
9
26
-
2
3

=2-
6
13
×
26
9
-
2
3

=2-
4
3
-
2
3

=2-(
4
3
+
2
3
),
=2-2,
=0.
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