题目内容

用你喜欢的方法计算下面各题
16×
3
4
÷
4
9
9
7
+4÷
7
5
4-(
2
5
+
3
5
÷
1
2
(1-0.6)÷(
2
3
÷
4
9
(1)16×
3
4
÷
4
9

=12÷
4
9

=27;

(2)4×
9
7
+4÷
7
5

=4×
9
7
+4×
5
7

=4×(
9
7
+
5
7
),
=4×2,
=8;

(3)4-(
2
5
+
3
5
÷
1
2
),
=4-(
2
5
+
6
5
),
=4-
8
5

=
12
5


(4)(1-0.6)÷(
2
3
÷
4
9
),
=0.4÷
3
2

=
4
15
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