题目内容

计算:
(1)
3
×
6
  
(2)2
10
×3
5
×
8

(3)
1
3
27
×
1
2
12
 
(4)3
a2b3
1
2
b
a
(1)原式=
3×6

=
18

=3
2


(2)原式=2
10
×3
5
×2
2

=(2×3×2)
10×5×2

=12
100

=120;

(3)原式=
3
×
3

=3;

(4)原式=(3×
1
2
a2b3×
b
a

=
3
2
ab4

=
3
2
b2
a
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