下面各题怎样简便就怎样算.35÷[(45-12)×4]15÷(415×3)×545×8×138×1.2537×36+34÷73(58+56)×4251-38÷35-数学

题目简介

下面各题怎样简便就怎样算.35÷[(45-12)×4]15÷(415×3)×545×8×138×1.2537×36+34÷73(58+56)×4251-38÷35-数学

题目详情

下面各题怎样简便就怎样算.
3
5
÷[(
4
5
-
1
2
)×4]
1
5
÷(
4
15
×3)×5
4
5
×8×
13
8
×1.25
3
7
×36+34÷
7
3
(
5
8
+
5
6
4
25
1-
3
8
÷
3
5
题型:解答题难度:中档来源:不详

答案

(1)class="stub"3
5
÷[(class="stub"4
5
-class="stub"1
2
)×4]
=class="stub"3
5
÷[class="stub"3
10
×4]
=class="stub"3
5
÷class="stub"6
5

=class="stub"1
2


(2)class="stub"1
5
÷(class="stub"4
15
×3)×5
=class="stub"1
5
÷class="stub"4
5
×5
=class="stub"1
4
×5
=1class="stub"1
4


(3)class="stub"4
5
×8×class="stub"13
8
×1.25
=class="stub"4
5
×8×class="stub"13
8
×class="stub"5
4

=(class="stub"4
5
×class="stub"5
4
)×(8×class="stub"13
8

=1×13
=13;

(4)class="stub"3
7
×36+34÷class="stub"7
3

=class="stub"3
7
×36+34×class="stub"3
7

=class="stub"3
7
×(36+34)
=class="stub"3
7
×70
=30;

(5)(class="stub"5
8
+class="stub"5
6
)×class="stub"4
25

=class="stub"5
8
×class="stub"4
25
+class="stub"5
6
×class="stub"4
25

=class="stub"1
10
+class="stub"2
15

=class="stub"7
30


(6)1-class="stub"3
8
÷class="stub"3
5

=1-class="stub"5
8

=class="stub"3
8

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