简算:58÷2021÷71234×(1718-59)4×[(56+23)÷6]45÷58-12÷58.-数学

题目简介

简算:58÷2021÷71234×(1718-59)4×[(56+23)÷6]45÷58-12÷58.-数学

题目详情

简算:
5
8
÷
20
21
÷
7
12
3
4
×(
17
18
-
5
9
4×[(
5
6
+
2
3
)÷6]
4
5
÷
5
8
-
1
2
÷
5
8
题型:解答题难度:中档来源:不详

答案

(1)class="stub"5
8
÷class="stub"10
21
÷class="stub"7
12

=class="stub"5
8
÷(class="stub"10
21
×class="stub"7
12
),
=class="stub"5
8
÷class="stub"5
18

=2.25;

(2)class="stub"3
4
×(class="stub"17
18
-class="stub"5
9
),
=class="stub"3
4
×class="stub"17
18
-class="stub"3
4
×class="stub"5
9

=class="stub"17
24
-class="stub"5
12

=class="stub"7
24


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

=1;

(4)class="stub"4
5
÷class="stub"5
8
-class="stub"1
2
÷class="stub"5
8

=(class="stub"4
5
-class="stub"1
2
÷class="stub"5
8

=class="stub"3
10
×class="stub"8
5

=class="stub"12
25

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