计算题[2.4×(1-35)+4%]÷4(3+57)÷(3-27)[23-35×(0.5+13)]÷57.-数学

题目简介

计算题[2.4×(1-35)+4%]÷4(3+57)÷(3-27)[23-35×(0.5+13)]÷57.-数学

题目详情

计算题
[2.4×(1-
3
5
)+4%]÷4
(3+
5
7
)÷(3-
2
7
[
2
3
-
3
5
×(0.5+
1
3
)]÷
5
7
题型:解答题难度:中档来源:不详

答案

(1)[2.4×(1-class="stub"3
5
)+4%]÷4,
=[2.4×class="stub"2
5
+0.04]÷4,
=[2.4×0.4+0.04]÷4,
=[0.96+0.04]÷4,
=1÷4,
=class="stub"1
4


(2)(3+class="stub"5
7
)÷(3-class="stub"2
7
),
=class="stub"26
7
÷class="stub"19
7

=class="stub"26
7
×class="stub"7
19

=class="stub"26
19


(3)[class="stub"2
3
-class="stub"3
5
×(0.5+class="stub"1
3
)]÷class="stub"5
7

=[class="stub"2
3
-class="stub"3
5
×(class="stub"1
2
+class="stub"1
3
)]÷class="stub"5
7

=[class="stub"2
3
-class="stub"3
5
×class="stub"5
6
class="stub"5
7

=[class="stub"2
3
-class="stub"1
2
class="stub"5
7

=class="stub"1
6
÷class="stub"5
7

=class="stub"1
6
×class="stub"7
5

=class="stub"7
30

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