25÷(25+34)(12+14-16)×12915×1417+817×1415[1-(23+15)×113]÷710(1-12-14-18-116-132-164)÷164.-数学

题目简介

25÷(25+34)(12+14-16)×12915×1417+817×1415[1-(23+15)×113]÷710(1-12-14-18-116-132-164)÷164.-数学

题目详情

2
5
÷(
2
5
+
3
4
)

(
1
2
+
1
4
-
1
6
)×12

9
15
×
14
17
+
8
17
×
14
15

[1-(
2
3
+
1
5
1
13
7
10

(1-
1
2
-
1
4
-
1
8
-
1
16
-
1
32
-
1
64
)÷
1
64
题型:解答题难度:中档来源:不详

答案

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

=class="stub"2
5
÷class="stub"23
20

=class="stub"8
23


(2)(class="stub"1
2
+class="stub"1
4
-class="stub"1
6
)×12
=class="stub"1
2
×12+class="stub"1
4
×12-class="stub"1
6
×12,
=6+3-2,
=7;

(3)class="stub"9
15
×class="stub"14
17
+class="stub"8
17
×class="stub"14
15

=class="stub"14
15
×class="stub"9
17
+class="stub"8
17
×class="stub"14
15

=(class="stub"9
17
+class="stub"8
17
)×class="stub"14
15

=1×class="stub"14
15

=class="stub"14
15


(4)[1-(class="stub"2
3
+class="stub"1
5
)×class="stub"1
13
class="stub"7
10

=[1-class="stub"13
15
×class="stub"1
13
class="stub"10
7

=[1-class="stub"1
15
class="stub"10
7

=class="stub"14
15
×class="stub"10
7

=class="stub"4
3


(5)(1-class="stub"1
2
-class="stub"1
4
-class="stub"1
8
-class="stub"1
16
-class="stub"1
32
-class="stub"1
64
)÷class="stub"1
64

=(1-class="stub"1
2
-class="stub"1
4
-class="stub"1
8
-class="stub"1
16
-class="stub"1
32
-class="stub"1
64
)×64,
=1×64-class="stub"1
2
×64-class="stub"1
4
×64-class="stub"1
8
×64-class="stub"1
16
×64-class="stub"1
32
×64-class="stub"1
64
×64,
=64-32-16-8-4-2-1,
=1.

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