题目内容

计算下列各题(能简便计算的要简算)
56×(
3
7
-
3
8
)9.75-3.42-5.58125×0.25×3.2
(
3
5
-
1
4
)×
4
7
3
8
×
6
7
+
6
7
÷8
3
4
+
1
4
×
2
3
.
(1)56×(
3
7
-
3
8
),
=56×
3
7
-56×
3
8
,
=24-21,
=3;

(2)9.75-3.42-5.58,
=9.75-(3.42+5.58),
=9.75-9,
=0.75;

(3)125×0.25×3.2,
=125×0.25×4×0.8,
=125×0.8×0.25×4,
=100×1,
=100;

(4)(
3
5
-
1
4
)×
4
7
,
=
3
5
×
4
7
-
1
4
×
4
7
,
=
12
35
-
1
7

=
12
35
-
5
35
,
=
1
5
;

(5)
3
8
×
6
7
+
6
7
÷8
=
3
8
×
6
7
+
6
7
×
1
8
,
=
6
7
×(
3
8
+
1
8
),
=
6
7
×
1
2
,
=
3
7
;

(6)
3
4
+
1
4
×
2
3
,
=
1
4
×(3+
2
3
),
=
1
4
×
11
3
,
=
11
12
.
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