题目内容

计算下面各题.
4
9
×
15
16
÷
5
6
(
4
5
+
1
4
)÷
7
3
+
7
10
4÷
8
3
-0.60.75×18÷0.15.
(1)
4
9
×
15
16
÷
5
6
,
=
4
9
×
15
16
×
6
5
,
=
1
2
;

(2)(
4
5
+
1
4
)÷
7
3
+
7
10
,
=(
16
20
+
5
20
)÷
7
3
+
7
10
,
=
21
20
×
3
7
+
7
10
,
=
9
20
+
14
20
,
=
23
20
,
=1
3
20
;

(3)4÷
8
3
-0.6,
=4×
3
8
-
0.6,
=1.5-0.6,
=0.9;

(4)0.75×18÷0.15,
=0.75÷0.15×18,
=5×18,
=90.
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