题目内容

计算下面各题,能简算的要简算:
1
4
+
3
4
×
1
3
8×
3
4
×
1
15
5
7
×
1
4
+
3
4
×
5
7
(
3
8
+
3
4
+
1
3
)×24
3.6+
3
7
+6.4+
4
7
5
4
-(
2
7
+
1
4
)
47×
3
46
63×
57
58
3
8
×25-
3
8
.
(1)
1
4
+
3
4
×
1
3
,
=
1
4
+
1
4
,
=
1
2
;

(2)8×
3
4
×
1
15
=
2
5
;

(3)
5
7
×
1
4
+
3
4
×
5
7
,
=
5
7
×(
1
4
+
3
4
),
=
5
7
×1,
=
5
7
;

(4)(
3
8
+
3
4
+
1
3
)×24,
=
3
8
×24+
3
4
×24+
1
3
×24,
=9+18+8,
=35;

(5)3.6+
3
7
+6.4+
4
7
,
=(3.6+6.4)+(
3
7
+
4
7
),
=10+1,
=11;

(6)
5
4
-(
2
7
+
1
4
),
=
5
4
-
1
4
-
2
7
,
=1-
2
7
,
=
5
7
;

(7)47×
3
46
,
=(46+1)×
3
46
,
=46×
3
46
+
3
46
,
=3+
3
46
,
=3
3
46
;

(8)63×
57
58
,
=63×(1-
1
58
)
=63-1
5
58
,
=61
53
58
;

(9)
3
8
×25-
3
8
,
=
3
8
×(25-1),
=
3
8
×24,
=9.
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