问题 解答题
计算下面各题(能简便计算的要简便计算).
(1)12×(124-85)÷26
(2)5.5×17.3+6.7×5.5
(3)
7
13
+
5
6
+
6
13
+
1
6

(4)1-
3
13
÷
9
26
-
1
5
答案

(1)12×(124-85)÷26

=12×39÷26,

=468÷26,

=18;

(2)5.5×17.3+6.7×5.5

=(17.3+6.7)×5.5,

=24×5.5,

=132;

(3)

7
13
+
5
6
+
6
13
+
1
6

=(

7
13
+
6
13
)+(
5
6
+
1
6
),

=1+1,

=2;

(4)1-

3
13
÷
9
26
-
1
5

=1-

2
3
-
1
5

=

1
3
-
1
5

=

2
15

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