计算下面各题.15÷54÷8725-125÷625(35+425÷25)×13(35-215)÷(112+56)1217÷3×45[1-(14+38)]÷14.-数学

题目简介

计算下面各题.15÷54÷8725-125÷625(35+425÷25)×13(35-215)÷(112+56)1217÷3×45[1-(14+38)]÷14.-数学

题目详情

计算下面各题.
15÷
5
4
÷
8
7
25-
12
5
÷
6
25
(
3
5
+
4
25
÷
2
5
1
3
(
3
5
-
2
15
)÷(
1
12
+
5
6
)
12
17
÷3×
4
5
[1-(
1
4
+
3
8
)]÷
1
4
题型:解答题难度:中档来源:不详

答案

(1)15÷class="stub"5
4
÷class="stub"8
7

=15×class="stub"4
5
×class="stub"7
8

=10class="stub"1
2


(2)25-class="stub"12
5
÷class="stub"6
25

=25-class="stub"12
5
×class="stub"25
6

=25-10,
=15;

(3)(class="stub"3
5
+class="stub"4
25
÷class="stub"2
5
)×class="stub"1
3

=(class="stub"3
5
+class="stub"4
25
×class="stub"5
2
)×class="stub"1
3

=(class="stub"3
5
+class="stub"2
5
)×class="stub"1
3

=1×class="stub"1
3

=class="stub"1
3


(4)(class="stub"3
5
-class="stub"2
15
)÷(class="stub"1
12
+class="stub"5
6
),
=class="stub"7
15
÷class="stub"11
12

=class="stub"7
15
×class="stub"12
11

=class="stub"28
55


(5)class="stub"12
17
÷3×class="stub"4
5

=class="stub"12
17
×class="stub"1
3
×class="stub"4
5

=class="stub"16
85


(6)[1-(class="stub"1
4
+class="stub"3
8
)]÷class="stub"1
4

=[1-class="stub"5
8
]×4,
=class="stub"3
8
×4,
=class="stub"3
2

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