问题 解答题
(1)计算:
6
2
÷
3
              
(2)计算:
12
-
20
+(2-
3
)2

(3)计算:2a
3ab2
-(
b
6
27a3
-2ab
3
4
a
答案

(1)原式=

12
÷
3

=

12÷3

=2;

(2)原式=2

3
-2
5
+4-4
3
+3

=7-2

3
-2
5

(3)原式=2ab

3a
-
ab
2
3a
+ab
3a

=

5
2
ab
3a

问答题
单项选择题 A1/A2型题