题目内容

计算下面各题.
4
9
×
15
16
÷
5
6
4
5
+
1
4
)÷
7
3
+
7
10
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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