2-(110+310)=(34-34×25)÷15×5=15×12÷15×12=(14+58)÷(134-78)=13÷56×922÷514=[34÷(45+14)-47]×911=-数学

题目简介

2-(110+310)=(34-34×25)÷15×5=15×12÷15×12=(14+58)÷(134-78)=13÷56×922÷514=[34÷(45+14)-47]×911=-数学

题目详情

2-(
1
10
+
3
10
)
=
(
3
4
-
3
4
×
2
5
1
5
×5
=
1
5
×
1
2
÷
1
5
×
1
2
=
(
1
4
+
5
8
)÷(1
3
4
-
7
8
)
=
1
3
÷
5
6
×
9
22
÷
5
14
=
[
3
4
÷(
4
5
+
1
4
)-
4
7
9
11
=
题型:解答题难度:中档来源:不详

答案

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

=1class="stub"3
5


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

=(class="stub"3
4
-class="stub"3
10
÷class="stub"1
5
×
5,
=class="stub"9
20
÷class="stub"1
5
×5,
=class="stub"9
4
×
5,
=11.25;

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

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

=class="stub"1
4


(4)(class="stub"1
4
+class="stub"5
8
)÷(1class="stub"3
4
-class="stub"7
8
)

=class="stub"7
8
÷class="stub"7
8

=1;

(5)class="stub"1
3
÷class="stub"5
6
×class="stub"9
22
÷class="stub"5
14

=class="stub"2
5
×class="stub"9
22
÷class="stub"5
14

=class="stub"9
55
÷class="stub"5
14

=class="stub"126
275


(6)[class="stub"3
4
÷(class="stub"4
5
+class="stub"1
4
)-class="stub"4
7
]×class="stub"9
11

=[class="stub"3
4
÷class="stub"21
20
-class="stub"4
7
class="stub"9
11

=[class="stub"5
7
-class="stub"4
7
class="stub"9
11

=class="stub"1
7
×class="stub"9
11

=class="stub"9
77

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