怎样简便就怎样算.56×(57-38)(78-78×514)÷51629÷[821×(13+215)]58÷79÷97.-数学

题目简介

怎样简便就怎样算.56×(57-38)(78-78×514)÷51629÷[821×(13+215)]58÷79÷97.-数学

题目详情

怎样简便就怎样算.
56×(
5
7
-
3
8
)             

7
8
-
7
8
×
5
14
)÷
5
16
2
9
÷[
8
21
×(
1
3
+
2
15
)]
5
8
÷
7
9
÷
9
7
题型:解答题难度:中档来源:不详

答案

(1)56×(class="stub"5
7
-class="stub"3
8
),
=56×class="stub"5
7
-56×class="stub"3
8

=40-21,
=19;

(2)(class="stub"7
8
-class="stub"7
8
×class="stub"5
14
)÷class="stub"5
16

=(class="stub"7
8
-class="stub"5
16
)÷class="stub"5
16

=class="stub"9
16
×class="stub"16
5

=class="stub"9
5


(3)class="stub"2
9
÷[class="stub"8
21
×(class="stub"1
3
+class="stub"2
15
)],
=class="stub"2
9
÷[class="stub"8
21
×class="stub"7
15
],
=class="stub"2
9
÷class="stub"8
45

=class="stub"2
9
×class="stub"45
8

=class="stub"5
4


(4)class="stub"5
8
÷class="stub"7
9
÷class="stub"9
7

=class="stub"5
8
×class="stub"9
7
×class="stub"7
9

=class="stub"5
8

更多内容推荐