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

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
)].
dql812 1年前 已收到1个回答 举报

一航白鹭 幼苗

共回答了18个问题采纳率:77.8% 举报

(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 .

1年前

3
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