问题 解答题
计算:
(1)
32
2

(2)
1.6

(3)
7
6a

(4)
3a
8a

(5)-
4
1
2
÷
2
2
3

(6)
1
a
b
a
÷
1
b
b
a3
答案

(1)原式=

4
2
2
=4;

(2)原式=

16
10
=
8
5
=
2
5
10

(3)原式=

7
6a
6a
6a
=
42a
6a

(4)原式=

3a
8a
=
3
8
=
3
2
2
=
6
4

(5)原式=-

9
2
×
3
8
=-
3
3
4

(6)原式=

b
a
a2
=
b
a
|a|.

填空题
单项选择题