计算.89÷45÷83415÷165÷731.8÷97÷25711÷[25-(1-710)].-数学

题目简介

计算.89÷45÷83415÷165÷731.8÷97÷25711÷[25-(1-710)].-数学

题目详情

计算.
8
9
÷
4
5
÷
8
3

4
15
÷
16
5
÷
7
3

1.8÷
9
7
÷
2
5

7
11
÷[
2
5
-(1-
7
10
)]
题型:解答题难度:中档来源:不详

答案

(1)class="stub"8
9
÷class="stub"4
5
÷class="stub"8
3

=class="stub"8
9
×class="stub"5
4
×class="stub"3
8

=class="stub"5
12


(2)class="stub"4
15
÷class="stub"16
5
÷class="stub"7
3

=class="stub"4
15
×class="stub"5
16
×class="stub"3
7

=class="stub"1
28


(3)1.8÷class="stub"9
7
÷class="stub"2
5

=1.8×class="stub"7
9
×class="stub"5
2

=3.5;

(4)class="stub"7
11
÷[class="stub"2
5
-(1-class="stub"7
10
)],
=class="stub"7
11
÷[class="stub"2
5
-class="stub"3
10
],
=class="stub"7
11
÷class="stub"1
10

=class="stub"7
11
×10,
=class="stub"70
11

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