题目内容

计算下列各题.(注意使用简便算法)
5
6
×
3
7
+
5
6
×
4
7

5
8
-
5
8
×
4
15

(35+
7
25
)÷
7
5

1÷(
3
4
+
1
2
)×
5
8
(1)
5
6
×
3
7
+
5
6
×
4
7

=
5
6
×(
3
7
+
4
7
),
=
5
6
×1,
=
5
6


(2)
5
8
-
5
8
×
4
15

=
5
8
×(1-
4
15
),
=
5
8
×
1
15

=
1
24


(3)(35+
7
25
)÷
7
5

=(35+
7
25
)×
5
7

=35×
5
7
+
7
25
×
5
7

=25+
1
5

=25
1
5


(4)1÷(
3
4
+
1
2
)×
5
8

=1÷
5
4
×
5
8

=
4
5
×
5
8

=
1
2
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