题目内容

下面各题怎样算简便就怎样算:
①
1
4
+
3
4
÷3
②24÷0.8÷
2
5
③
3
4
×
8
13
+
8
13
÷4

④2-
7
12
÷
7
8
-
1
3
⑤0.2-(
1
2
-
1
6
)×
3
5
⑥(0.6+
3
10
)÷(1-
1
10
)
.
①
1
4
+
3
4
÷3
,
=
1
4
+
1
4
,
=
1
2
;

②24÷0.8÷
2
5
,
=30÷
2
5
,
=75;

③
3
4
×
8
13
+
8
13
÷4
,
=
3
4
×
8
13
+
8
13
×
1
4
,
=(
3
4
+
1
4
)×
8
13
,
=1×
8
13
,
=
8
13
;

④2-
7
12
÷
7
8
-
1
3
,
=2-
2
3
-
1
3
,
=2-(
2
3
+
1
3
),
=2-1,
=1;

⑤0.2-(
1
2
-
1
6
)×
3
5
,
=0.2-
1
3
×
3
5
,
=0.2-
1
5
,
=0;

⑥(0.6+
3
10
)÷(1-
1
10
)
,
=0.9÷0.9,
=1.
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