题目内容

计算下面各题,怎样算简便就怎样算.
(1)
5
6
+
3
11
+
5
11
+
1
6

(2)
6
7
+
1
4
-
9
14

(3)51.27-8.66-1.34
(4)32.5÷(0.05×50)
(5)
1
2
+
1
6
+
1
12
+
1
20

(6)
4
5
-(
2
3
-
1
2
)
(1)
5
6
+
3
11
+
5
11
+
1
6

=(
5
6
+
1
6
)+(
3
11
+
5
11
)

=1+
8
11

=1
8
11


(2)
6
7
+
1
4
-
9
14

=
24
28
+
7
28
-
18
28

=
13
28


(3)51.27-8.66-1.34
=51.27-(8.66+1.34),
=51.27-10,
=41.27;

(4)32.5÷(0.05×50)
=32.5÷
5
2

=
65
2
×
2
5

=13;

(5)
1
2
+
1
6
+
1
12
+
1
20

=(
6
12
+
2
12
+
1
12
)+
1
20

=
3
4
+
1
20

=
4
5


(6)
4
5
-(
2
3
-
1
2
)

=
4
5
-
1
6

=
19
30
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