问题 解答题
下面各题,怎样简便就怎样算,写出主要过程.
(3618÷18-145)×29 
36×(
11
12
-
7
9

3.4-5.8+7.6-2.2  
(0.8+
1
4
)÷
3
5
+0.25.
答案

(1)(3618÷18-145)×29,

=(201-145)×29,

=56×29,

=1624;

(2)36×(

11
12
-
7
9
),

=36×

11
12
-36×
7
9

=33-28,

=5;

(3)3.4-5.8+7.6-2.2,

=(3.4+7.6)-(5.8+2.2),

=11-8,

=3;

(4)(0.8+

1
4
)÷
3
5
+0.25,

=1.05÷0.6+0.25,

=1.75+0.25,

=2.

单项选择题 A1型题
单项选择题