计算下面各题:(1)2011+450÷15×30(2)10÷58×415(3)920÷6+16×120(4)910÷[12×(65-310)].-数学

题目简介

计算下面各题:(1)2011+450÷15×30(2)10÷58×415(3)920÷6+16×120(4)910÷[12×(65-310)].-数学

题目详情

计算下面各题:
(1)2011+450÷15×30(2)10÷
5
8
×
4
15
(3)
9
20
÷6+
1
6
×
1
20
(4)
9
10
÷[
1
2
×(
6
5
-
3
10
)].
题型:解答题难度:中档来源:不详

答案

(1)2011+450÷15×30,
=2011+30×30,
=2011+900,
=2911;

(2)10÷class="stub"5
8
×class="stub"4
15

=16×class="stub"4
15

=class="stub"64
15


(3)class="stub"9
20
÷6+class="stub"1
6
×class="stub"1
20

=class="stub"9
20
×class="stub"1
6
+class="stub"1
6
×class="stub"1
20

=(class="stub"9
20
+class="stub"1
20
)×class="stub"1
6

=class="stub"1
2
×class="stub"1
6

=class="stub"1
12


(4)class="stub"9
10
÷[class="stub"1
2
×(class="stub"6
5
-class="stub"3
10
)],
=class="stub"9
10
÷[class="stub"1
2
×class="stub"9
10
],
=class="stub"9
10
÷class="stub"9
20

=2.

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