(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(

题目简介

(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(

题目详情

(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:中档来源:不详

答案

(1)206×18+292,
=3708+292,
=4000;

(2)14.4÷0.2×3,
=72×3,
=216;

(3)(6class="stub"3
4
-5class="stub"7
12
+1class="stub"5
12
)×class="stub"3
11

=(6class="stub"9
12
-5class="stub"7
12
+1class="stub"5
12
)×class="stub"3
11

=class="stub"31
12
×class="stub"3
11

=class="stub"31
44


(4)[(1.5+2class="stub"2
3
)×1.6]÷class="stub"1
3

=[(class="stub"3
2
+class="stub"8
3
)×class="stub"8
5
class="stub"1
3

=[class="stub"25
6
×class="stub"8
5
]×3,
=class="stub"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.

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