题目内容

计算下面各题,能简算的要简算.
7
12
+
3
8
-
5
6
)÷
1
24

3
8
×
5
6
-
1
3
×
3
8
(1)(
7
12
+
3
8
-
5
6
)÷
1
24

=(
7
12
+
3
8
-
5
6
)×24,
=
7
12
×24+
3
8
×24-
5
6
×24,
=14+9-20,
=23-20,
=3;

(2)
3
8
×
5
6
-
1
3
×
3
8

=
3
8
×(
5
6
-
1
3
),
=
3
8
×
1
2

=
3
16
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