25+34×23(14-16)×121314×13+1314526×310×39.-数学

题目简介

25+34×23(14-16)×121314×13+1314526×310×39.-数学

题目详情

2
5
+
3
4
×
2
3

1
4
-
1
6
)×12
13
14
×13+
13
14

5
26
×
3
10
×39.
题型:解答题难度:中档来源:不详

答案

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

=class="stub"2
5
+class="stub"1
2

=class="stub"9
10


(2)class="stub"13
14
×13+class="stub"13
14

=class="stub"13
14
×(13+1),
=class="stub"13
14
×1,
=class="stub"13
14


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

(4)class="stub"5
26
×class="stub"3
10
×39,
=(class="stub"5
26
×39)×class="stub"3
10

=class="stub"15
2
×class="stub"3
10

=class="stub"9
4

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