下面各题怎样简便就怎样算72×58-32÷851-58÷2528-310(23+415×56)÷202145÷[(35+12)×2].-六年级数学

题目简介

下面各题怎样简便就怎样算72×58-32÷851-58÷2528-310(23+415×56)÷202145÷[(35+12)×2].-六年级数学

题目详情

下面各题怎样简便就怎样算
7
2
×
5
8
-
3
2
÷
8
5
1-
5
8
÷
25
28
-
3
10
2
3
+
4
15
×
5
6
)÷
20
21
4
5
÷[(
3
5
+
1
2
)×2].
题型:解答题难度:中档来源:不详

答案

(1)class="stub"7
2
×class="stub"5
8
-class="stub"3
2
÷class="stub"8
5

=class="stub"7
2
×class="stub"5
8
-class="stub"3
2
×class="stub"5
8

=(class="stub"7
2
-class="stub"3
2
)×class="stub"5
8

=2×class="stub"5
8

=class="stub"5
4


(2)1-class="stub"5
8
÷class="stub"25
28
-class="stub"3
10

=1-class="stub"5
8
×class="stub"8
25
-class="stub"3
10

=1-class="stub"1
5
-class="stub"3
10

=1-(class="stub"1
5
+class="stub"3
10
),
=1-class="stub"1
2

=class="stub"1
2


(3)(class="stub"2
3
+class="stub"4
15
×class="stub"5
6
)÷class="stub"20
21

=(class="stub"2
3
+class="stub"2
9
)×class="stub"21
20

=class="stub"2
3
×class="stub"21
20

=class="stub"7
10


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

=class="stub"4
5
×class="stub"5
11

=class="stub"4
11

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