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下面各题怎样算简便就怎样算.1835÷0.6×23 517÷9+19×1217 2-613÷926-23 (15-14×47)×821 87×386 45÷[(13+25)×411].

编辑:chaxungu时间:2026-04-27 13:18:19分类:小学数学题库

下面各题怎样算简便就怎样算.
18
35
÷0.6×
2
3
5
17
÷9+
1
9
×
12
17
2-
6
13
÷
9
26
-
2
3
(15-14×
4
7
)×
8
21
87×
3
86
4
5
÷[(
1
3
+
2
5
)×
4
11
].
(1)
18
35
÷0.6×
2
3

=
18
35
×
5
3
×
2
3

=
4
7
;
(2)
5
17
÷9+
1
9
×
12
17

=
5
17
×
1
9
+
1
9
×
12
17

=
1
9
×(
5
17
+
12
17
)
=
1
9
;
(3)2-
6
13
÷
9
26
-
2
3

=2-
4
3
-
2
3

=2-(
4
3
+
2
3
)
=2-2
=0;
(4)(15-14×
4
7
)×
8
21

=(15-8)×
8
21

=7×
8
21

=
8
3
;
(5)87×
3
86

=(86+1)×
3
86

=86×
3
86
+
3
86

=3
3
86
;
(6)
4
5
÷[(
1
3
+
2
5
)×
4
11
]
=
4
5
÷[
11
15
×
4
11
]
=
4
5
÷
4
15

=3.