问题 解答题
计算:
(1)(
3
8
-3
3
)-
6

(2)2
12
+3
1
1
3
-
5
1
3
-
2
3
48

(3)
2
+1+
3
(
3
-
6
)+
8

(4)9
45
÷
2
1
2
×
3
2
2
2
3

(5)
3a2
÷3
a
2
×
1
2
2a
3
答案

(1)原式=

8
3
×
6
-3
3
×
6

=

8
3
×6
-3
3
×
3
×
2

=

3
2
-9
2

(2)原式=4

3
+3×
2
3
3
-
4
3
3
-
8
3
3

=2

3

(3)原式=

2
+1+3-3
2
+2
2

=4;

(4)原式=27

5
÷
5
2
×
3
2
8
3

=27×

3
2
5
2
×
8
3

=

162
3
3

(5)原式=1×

1
3
×
1
2
3a2÷
a
2
×
2a
3

=

1
6
×
4a2

=

a
3

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