脱式计算:(1)12×(34+12)(2)25×12÷25×12(3)132×25+14÷34.-数学

题目简介

脱式计算:(1)12×(34+12)(2)25×12÷25×12(3)132×25+14÷34.-数学

题目详情

脱式计算:
(1)12×(
3
4
+
1
2

(2)
2
5
×
1
2
÷
2
5
×
1
2

(3)1
3
2
×
2
5
+
1
4
÷
3
4
题型:解答题难度:中档来源:不详

答案

(1)12×(class="stub"3
4
+class="stub"1
2
),
=12×class="stub"3
4
+12×class="stub"1
2

=9+6,
=15;

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

=class="stub"1
5
÷class="stub"2
5
×class="stub"1
2

=class="stub"1
2
×class="stub"1
2

=class="stub"1
4


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

=1+class="stub"1
3

=1class="stub"1
3

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