450÷18×2558×14+14×38﹙0.75-316﹚×﹙29+13﹚29×0.375÷6712×﹙14+16-13﹚115÷[﹙23+15﹚×126].-数学

题目简介

450÷18×2558×14+14×38﹙0.75-316﹚×﹙29+13﹚29×0.375÷6712×﹙14+16-13﹚115÷[﹙23+15﹚×126].-数学

题目详情

450÷18×25
5
8
×
1
4
+
1
4
×
3
8
﹙0.75-
3
16
﹚×﹙
2
9
+
1
3
2
9
×0.375÷
6
7
12×﹙
1
4
+
1
6
-
1
3
1
15
÷[﹙
2
3
+
1
5
﹚×
1
26
].
题型:解答题难度:中档来源:不详

答案

(1)450÷18×25,
=25×25,
=625;

(2)class="stub"5
8
×class="stub"1
4
+class="stub"1
4
×class="stub"3
8

=(class="stub"5
8
+class="stub"3
8
)×class="stub"1
4

=1×class="stub"1
4

=class="stub"1
4


(3)﹙0.75-class="stub"3
16
﹚×﹙class="stub"2
9
+class="stub"1
3
﹚,
=class="stub"9
16
×class="stub"5
9

=class="stub"5
16


(4)class="stub"2
9
×0.375÷class="stub"6
7

=class="stub"1
12
÷class="stub"6
7

=class="stub"7
72


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

=3+2-4,
=5-4,
=1;

(6)class="stub"1
15
÷[﹙class="stub"2
3
+class="stub"1
5
﹚×class="stub"1
26
],
=class="stub"1
15
÷[class="stub"13
15
×class="stub"1
26
],
=class="stub"1
15
÷class="stub"1
30

=2.

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