问题 解答题
计算下面各题( 要写出主要过程).
18÷
2
3
-
2
3
1÷(
1
2
+
1
5
4.5+0.5×10
3
4
+
1
6
)×
4
33
7.6-(1.6+
2
3
0.35×
2
5
÷1.4
5
7
×7÷
5
7
×7
(1.2-1.2÷1.2)÷1.2.
答案

18÷
2
3
-
2
3

=18×

3
2
-
2
3

=27-

2
3

=26

1
3

1÷(

1
2
+
1
5
),

=1÷

7
10

=1×

10
7

=

10
7

4.5+0.5×10,

=4.5+5,

=9.5;

3
4
+
1
6
)×
4
33

=(

9
12
+
2
12
)×
4
33

=

11
12
×
4
33

=

1
9

7.6-(1.6+

2
3
),

=7.6-1.6-

2
3

=5

1
3
0.35×
2
5
÷1.4,

=0.14÷1.4,

=0.1;

5
7
×7÷
5
7
×7,

=5×

7
5
×7,

=49;

(1.2-1.2÷1.2)÷1.2,

=(1.2-1)÷1.2,

=0.2÷1.2,

=

1
6

单项选择题
判断题