用你喜欢的方法计算(1)1375+360÷90×250(2)81÷14+17×114(3)35×(17+821÷23)(4)20062007×2008.-数学

题目简介

用你喜欢的方法计算(1)1375+360÷90×250(2)81÷14+17×114(3)35×(17+821÷23)(4)20062007×2008.-数学

题目详情

用你喜欢的方法计算
(1)1375+360÷90×250  
(2)81÷14+17×
1
14

(3)
3
5
×(
1
7
+
8
21
÷
2
3
)

(4)
2006
2007
×2008
题型:解答题难度:中档来源:不详

答案

(1)1375+360÷90×250,
=1375+40×250,
=1375+1000,
=2375;

(2)81÷14+17×class="stub"1
14

=81×class="stub"1
14
+17×class="stub"1
14

=(81+17)×class="stub"1
14

=98×class="stub"1
14

=7;

(3)class="stub"3
5
×(class="stub"1
7
+class="stub"8
21
÷class="stub"2
3
)

=class="stub"3
5
×(class="stub"1
7
+class="stub"4
7
),
=class="stub"3
5
×class="stub"5
7

=class="stub"3
7


(4)class="stub"2006
2007
×2008

=class="stub"2006
2007
×(2007+1),
=class="stub"2006
2007
×2007+class="stub"2006
2007
×1,
=2007+class="stub"2006
2007

=2007class="stub"2006
2007

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