计算,能简算的要简算13÷49+13+1425×185+35×185[1-(12-13)]×15(169+271)×23+2571.-数学

题目简介

计算,能简算的要简算13÷49+13+1425×185+35×185[1-(12-13)]×15(169+271)×23+2571.-数学

题目详情

计算,能简算的要简算
1
3
÷
4
9
+
1
3
+
1
4
  
2
5
×
18
5
+
3
5
×
18
5

[1-(
1
2
-
1
3
)]×
1
5
  
1
69
+
2
71
)×23+
25
71
题型:解答题难度:中档来源:不详

答案

(1)class="stub"1
3
÷class="stub"4
9
+class="stub"1
3
+class="stub"1
4

=class="stub"3
4
+class="stub"1
3
+class="stub"1
4

=class="stub"3
4
+class="stub"1
4
+class="stub"1
3

=1+class="stub"1
3

=1class="stub"1
3


(2)class="stub"2
5
×class="stub"18
5
+class="stub"3
5
×class="stub"18
5

=(class="stub"2
5
+class="stub"3
5
)×class="stub"18
5

=1×class="stub"18
5

=class="stub"18
5


(3)[1-(class="stub"1
2
-class="stub"1
3
)]×class="stub"1
5

=[1-class="stub"1
6
class="stub"1
5

=class="stub"5
6
×class="stub"1
5

=class="stub"1
6


(4)(class="stub"1
69
+class="stub"2
71
)×23+class="stub"25
71

=class="stub"1
69
×23+class="stub"2
71
×23+class="stub"25
71

=class="stub"1
3
+class="stub"46
71
+class="stub"25
71

=class="stub"1
3
+(class="stub"46
71
+class="stub"25
71
),
=class="stub"1
3
+1,
=1class="stub"1
3

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