问题 解答题
下面各题怎样简便就怎样算
14.4÷0.125÷8
1
6
+
1
8
)×24×
1
5
2.34×56-23.4×5.6
1.5×
4
5
+0.8×5.5+2×
4
5
1005÷[42×(
5
6
-
5
7
)]
12
35
÷[1-(
1
5
+
1
7
)].
答案

(1)14.4÷0.125÷8,

=14.4÷(0.125×8),

=14.4÷1,

=14.4;

(2)(

1
6
+
1
8
)×24×
1
5

=

1
6
×24×
1
5
+
1
8
×24×
1
5

=

4
5
+
3
5

=

7
5

(3)2.34×56-23.4×5.6,

=2.34×56-2.34×56

=2.34×(56-56),

=0;

(4)1.5×

4
5
+0.8×5.5+2×
4
5

=1.5×0.8+0.8×5.5+2×0.8,

=(1.5+5.5+2)×0.8,

=9×0.8,

=7.2;

(5)1005÷[42×(

5
6
-
5
7
)],

=1005÷[42×

5
6
-42×
5
7
],

=1005÷[35-30],

=1005÷5,

=201;

(6)

12
35
÷[1-(
1
5
+
1
7
)],

=

12
35
÷[1-
12
35
],

=

12
35
÷
24
35

=

12
35
×
35
24

=

1
2

计算题
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