题目内容

怎样简便怎样算.
5
6
×
7
25
×6
2
5
×
3
14
×
2
3
(
3
7
+
1
2
)×14
5
8
×
5
8
+
5
8
×
3
8
100×
2
99
5
14
×
7
25
×
5
8
×
2
3
.

(1)
5
6
×
7
25
×6,
=
5
6
×6×
7
25
,
=5×
7
25
,
=
7
5
;

(2)
2
5
×
3
14
×
2
3
,
=
2
5
×(
3
14
×
2
3
),
=
2
5
×
1
7
,
=
2
35
;

(3)(
3
7
+
1
2
)×14,
=
3
7
×14+
1
2
×14,
=6+7,
=13;

(4)
5
8
×
5
8
+
5
8
×
3
8
,
=
5
8
×(
5
8
+
3
8
),
=
5
8
×1,
=
5
8
;

(5)100×
2
99
,
=(99+1)×
2
99
,
=99×
2
99
+1×
2
99
,
=2+
2
99
,
=2
2
99
;

(6)
5
14
×
7
25
×
5
8
×
2
3
,
=(
5
14
×
7
25
)×(
5
8
×
2
3
),
=
1
10
×
5
12
,
=
1
24
.
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