(1)206×18+292(2)14.4÷0.2×3(3)(634-5712+1512)×311(4)[(1.5+223)×1.6]÷13(5)2005×20062006-2006×20052005(6)2006-2005+2004-2003+2002-2001+…+4-3+2-1.-数学

题文

(1)206×18+292
(2)14.4÷0.2×3
(3)(6
3
4
-5
7
12
+1
5
12
3
11

(4)[(1.5+2
2
3
)×1.6]÷
1
3

(5)2005×20062006-2006×20052005
(6)2006-2005+2004-2003+2002-2001+…+4-3+2-1.
题型:解答题  难度:中档

答案

(1)206×18+292,
=3708+292,
=4000;

(2)14.4÷0.2×3,
=72×3,
=216;

(3)(6
3
4
-5
7
12
+1
5
12
)×
3
11

=(6
9
12
-5
7
12
+1
5
12
)×
3
11

=
31
12
×
3
11

=
31
44


(4)[(1.5+2
2
3
)×1.6]÷
1
3

=[(
3
2
+
8
3
)×
8
5
1
3

=[
25
6
×
8
5
]×3,
=
20
3
×3,
=20;

(5)2005×20062006-2006×20052005,
=2005×2006×10001-2006×2005×10001,
=0;

(6)2006-2005+2004-2003+2002-2001+…+4-3+2-1,
=(2006-2005)+(2004-2003)+…+(4-3)+(2-1),
=1×1003,
=1003.

据专家权威分析,试题“(1)206×18+292(2)14.4÷0.2×3(3)(634-5712+1512)×311(4)[(1.5+..”主要考查你对  整数的四则混合运算及应用题  等考点的理解。关于这些考点的“档案”如下: