数学
(2012·肇庆)计算
20
·
1
5
的结果是
2
2
.
(2011·遵义)计算:
8
×
1
2
=
2
2
.
(2009·大连)计算:(
3
+1
)(
3
-1
)=
2
2
.
(2008·厦门)计算:
3
×
2
=
6
6
.
(2007·黄冈)计算:
(
5
+2)(
5
-2)
=
1
1
.
(2005·重庆)计算:
(
2
)
2
=
2
2
.
(2002·湖州)计算
3
·
27
=
9
9
.
(2013·南平模拟)计算:
8
×
2
=
4
4
.
(2013·南岗区一模)计算
20
×
12
=
4
15
4
15
.
(2013·大港区一模)化简:
8
·
12
=
4
6
4
6
.
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