用递等式计算下列各题.496+250×1610.2-(1.25+2.5)÷1.537÷56+47×65920÷[34×(25+13)].-数学

题目简介

用递等式计算下列各题.496+250×1610.2-(1.25+2.5)÷1.537÷56+47×65920÷[34×(25+13)].-数学

题目详情

用递等式计算下列各题.
496+250×16

10.2-(1.25+2.5)÷1.5

3
7
÷
5
6
+
4
7
×
6
5

9
20
÷[
3
4
×(
2
5
+
1
3
)]
题型:解答题难度:中档来源:不详

答案

(1)496+250×16,
=496+250×4×4,
=496+1000×4,
=496+4000,
=4496;

(2)10.2-(1.25+2.5)÷1.5,
=10.2-3.75÷1.5,
=10.2-2.5,
=7.7;

(3)class="stub"3
7
÷class="stub"5
6
+class="stub"4
7
×class="stub"6
5

=class="stub"3
7
×class="stub"6
5
+class="stub"4
7
×class="stub"6
5

=(class="stub"3
7
+class="stub"4
7
)×class="stub"6
5

=1×class="stub"6
5

=class="stub"6
5


(4)class="stub"9
20
÷[class="stub"3
4
×(class="stub"2
5
+class="stub"1
3
)]

=class="stub"9
20
÷[class="stub"3
4
×class="stub"11
15
],
=class="stub"9
20
÷class="stub"11
20

=class="stub"9
11

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