脱式计算25÷[34-(13+18)];817÷23+123×917+123.-数学

题目简介

脱式计算25÷[34-(13+18)];817÷23+123×917+123.-数学

题目详情

脱式计算
2
5
÷[
3
4
-(
1
3
+
1
8
)];
8
17
÷23+
1
23
×
9
17
+
1
23
题型:解答题难度:中档来源:不详

答案

(1)class="stub"2
5
÷[class="stub"3
4
-(class="stub"1
3
+class="stub"1
8
)],
=class="stub"2
5
÷[class="stub"3
4
-class="stub"11
24
],
=class="stub"2
5
÷class="stub"7
24

=class="stub"48
35


(2)class="stub"8
17
÷23+class="stub"1
23
×class="stub"9
17
+class="stub"1
23

=class="stub"8
17
×class="stub"1
23
+class="stub"1
23
×class="stub"9
17
+class="stub"1
23

=(class="stub"8
17
+class="stub"9
17
+1)×class="stub"1
23

=2×class="stub"1
23

=class="stub"2
23

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