计算下面各题,能简算的要简算. 2 3 + 1 5 + 4 5 + 1 3 4- 5 11 - 6 11 1 8 ×58

计算下面各题,能简算的要简算.
2
3
+
1
5
+
4
5
+
1
3
4-
5
11
-
6
11
1
8
×58+
1
8
×41+
1
8
4
5
÷
4
7
×
5
4
-
1
2
3
10
-
3
10
÷6
3
8
×[(
1
2
+
2
5
)×
2
3
].
勿匆 1年前 已收到1个回答 举报

衤宁 幼苗

共回答了18个问题采纳率:88.9% 举报

(1)
2
3 +
1
5 +
4
5 +
1
3 ,
=(
2
3 +
1
3 )+(
1
5 +
4
5 ),
=1+1,
=2;

(2)4-(
5
11 +
6
11 ),
=4-1,
=3;

(3)
1
8 ×58+
1
8 ×41+
1
8 ,
=
1
8 ×(58+41+1),
=
1
8 ×100,
=12.5;

(4)
4
5 ÷
4
7 ×
5
4 -
1
2 ,
=
4
5 ×
5
4 ×
7
4 -
1
2 ,
=1×
7
4 -
1
2 ,
=
7
4 -
1
2 ,
=
5
4 ;

(5)6÷
3
10 -
3
10 ÷6,
=20-
1
20 ,
=19
19
20 ;

(6)
3
8 ×[(
1
2 +
2
5 )×
2
3 ],
=
3
8 ×[
9
10 ×
2
3 ],
=
3
8 ×
3
5 ,
=
9
40 .

1年前

1
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