问题
解答题
计算: (1)
(2)3×(
(3)12÷(1-
(4)2011÷(2011+
|
答案
(1)原式=
×11 2
×2 5 1 11
=
;1 5
(2)原式=3×
×21 6
=1;
(3)原式=12÷(
-6 6
+3 6
-2 6
)1 6
=12÷2 3
=12×3 2
=18;
(4)原式=2011÷2011×2012+2011 2012
=2011×2012 2011(2012+1)
=
.2012 2013