用递等式计算(能简算的要简算).12×45÷232112×115-4÷251324×9+1124÷1914÷〔(56-34)×115〕36×(79+34-56)12×34+34+112×34.-数学

题目简介

用递等式计算(能简算的要简算).12×45÷232112×115-4÷251324×9+1124÷1914÷〔(56-34)×115〕36×(79+34-56)12×34+34+112×34.-数学

题目详情

用递等式计算(能简算的要简算).
1
2
×
4
5
÷
2
3
2
1
12
×
1
15
-4÷
2
5
13
24
×9+
11
24
÷
1
9
1
4
÷〔(
5
6
-
3
4
)×1
1
5
36×(
7
9
+
3
4
-
5
6
1
2
×
3
4
+
3
4
+1
1
2
×
3
4
题型:解答题难度:中档来源:不详

答案

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

=class="stub"1
2
×class="stub"4
5
×class="stub"3
2

=class="stub"3
5


(2)2class="stub"1
12
×class="stub"1
15
-4÷class="stub"2
5

=class="stub"25
12
×class="stub"1
15
-4×class="stub"5
2

=class="stub"5
36
-10,
=-9class="stub"31
36


(3)class="stub"13
24
×9+class="stub"11
24
÷class="stub"1
9

=class="stub"13
24
×9+class="stub"11
24
×9,
=(class="stub"13
24
+class="stub"11
24
)×9,
=1×9,
=9;

(4)class="stub"1
4
÷[(class="stub"5
6
-class="stub"3
4
)×1class="stub"1
5
],
=class="stub"1
4
÷[class="stub"1
12
×class="stub"6
5
],
=class="stub"1
4
÷class="stub"1
10

=class="stub"1
4
×10,
=2.5;

(5)36×(class="stub"7
9
+class="stub"3
4
-class="stub"5
6
),
=36×class="stub"7
9
+36×class="stub"3
4
-36×class="stub"5
6

=28+27-30,
=25;

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

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

=3×class="stub"3
4

=class="stub"9
4

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