计算下面各题. 1 5 ×4÷ 4 5 3 14 + 3 14 ×13 4 25 × 3 8 ÷ 4 25 × 3 8

计算下面各题.
1
5
×4÷
4
5
3
14
+
3
14
×13
4
25
×
3
8
÷
4
25
×
3
8
3
8
-0.3×
5
6
68×(
15
17
-
9
34
[1-(
1
4
+
3
8
)]÷
1
4
hezijie 1年前 已收到1个回答 举报

zhoujian131421 幼苗

共回答了13个问题采纳率:84.6% 举报

(1)
1
5 ×4÷
4
5 ,
=
1
5 ×4×
5
4 ,
=1;

(2)
3
14 +
3
14 ×13,
=
3
14 ×(13+1),
=
3
14 ×14,
=3;

(3)
4
25 ×
3
8 ÷
4
25 ×
3
8 ,
=
4
25 ×
3
8 ×
25
4 ×
3
8 ,
=
9
64 ;

(4)
3
8 -0.3×
5
6 ,
=
3
8 -
3
10 ×
5
6 ,
=
3
8 -
1
4 ,
=
1
8 ;

(5)68×(
15
17 -
9
34 ),
=68×
15
17 -68×
9
34 ,
=60-18,
=42;

(6)[1-(
1
4 +
3
8 )]÷
1
4 ,
=[1-
5
8 ]÷
1
4 ,
=
3
8 ×4,
=
3
2 .

1年前

1
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