问题 解答题
怎样简便就怎样算:
4.5+5.5×3.6×0.1;   
5-
1
3
+
1
2
-
1
6
;    
1
4
×0.16×
3
8
×0.124×
1
2
÷4×
1
2
;    
10.8×(
2
3
+
5
6
+
4
9
);   
(3.25-0.8×
5
8
)÷0.1.
答案

(1)4.5+5.5×3.6×0.1,

=4.5+19.8×0.1,

=4.5+1.98,

=6.48;

(2)5-

1
3
+
1
2
-
1
6

=4

2
3
+
1
2
-
1
6

=5

1
6
-
1
6

=5;

(3)

1
4
×0.16×
3
8
×0.124×
1
2
÷4×
1
2

=0.04×

3
8
×0.124×
1
2
÷4×
1
2

=0.015×0.124×

1
2
÷4×
1
2

=0.00186×

1
2
÷4×
1
2

=0.00093÷4×

1
2

=0.0002325×

1
2

=0.00011625;

(4)10.8×(

2
3
+
5
6
+
4
9
),

=10.8×

2
3
+10.8×
5
6
+10.8×
4
9

=7.2+9+4.8,

=21;

(5)(3.25-0.8×

5
8
)÷0.1,

=(3.25-0.5)÷0.1,

=2.75÷0.1,

=27.5.

单项选择题 A1/A2型题
填空题