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下面各题,怎样算简便就怎样算.①9.56+4.875-78+1.44②34÷6-16×14③13÷(14+56)×34④89×[34-(716-14)]⑤[1-(38+14)]×239⑥815×[56÷(79−13)].

题目详情
下面各题,怎样算简便就怎样算.
①9.56+4.875-
7
8
+1.44

3
4
÷6-
1
6
×
1
4
13÷(
1
4
+
5
6
3
4
8
9
×[
3
4
-(
7
16
-
1
4
)]
⑤[1-(
3
8
+
1
4
)]×
2
39
8
15
×[
5
6
÷(
7
9
1
3
)].
▼优质解答
答案和解析
①9.56+4.875-
7
8
+1.44,
=(9.56+1.44)+(4.875-
7
8
),
=11+4,
=15;

3
4
÷6-
1
6
×
1
4

=
3
4
×
1
6
-
1
6
×
1
4

=
1
6
×(
3
4
-
1
4
),
=
1
6
×
1
2

=
1
12


③13÷(
1
4
+
5
6
)×
3
4

=13÷
13
12
×
3
4

=13×
12
13
×
3
4

=9;

8
9
×[
3
4
-(
7
16
-
1
4
)],
=
8
9
×[
3
4
-
3
16
],
=
8
9
×