问题 解答题
用递等式计算.
(1)(3618÷18-145)×20
(2)16.8-45÷0.9×0.16
(3)
4
9
×
3
20
+
11
15
÷22
(4)96÷[(
5
6
-
3
4
)×2.4+
3
5
].
答案

(1)(3618÷18-145)×20,

=(201-145)×20,

=56×20,

=1120

(2)16.8-45÷0.9×0.16,

=16.8-50×0.16,

=16.8-8,

=8.8;

(3)

4
9
×
3
20
+
11
15
÷22,

=

1
15
+
11
15
÷22,

=

1
15
+
1
30

=

1
10

(4)96÷[(

5
6
-
3
4
)×2.4+
3
5
],

=96÷[

1
12
×2.4+
3
5
],

=96÷[

1
5
+
3
5
],

=96÷

4
5

=120.

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