计算下面各题,怎样算简便就怎样算.15×38÷9430×(25+16-415)25×713+40%×61310-(25+35×2)715+14×125-35[(75-1)÷25]×54.-数学

题目简介

计算下面各题,怎样算简便就怎样算.15×38÷9430×(25+16-415)25×713+40%×61310-(25+35×2)715+14×125-35[(75-1)÷25]×54.-数学

题目详情

计算下面各题,怎样算简便就怎样算.
15×
3
8
÷
9
4
30×(
2
5
+
1
6
-
4
15
2
5
×
7
13
+40%×
6
13
10-(
2
5
+
3
5
×2)
7
15
+
1
4
×
12
5
-
3
5
[(
7
5
-1)÷
2
5
5
4
题型:解答题难度:中档来源:不详

答案

(1)15×class="stub"3
8
÷class="stub"9
4

=15×class="stub"3
8
×class="stub"4
9

=2class="stub"1
2

(2)30×(class="stub"2
5
+class="stub"1
6
-class="stub"4
15

=30×class="stub"2
5
+30×class="stub"1
6
-30×class="stub"4
15

=12+5-8
=9;
(3)class="stub"2
5
×class="stub"7
13
+40%×class="stub"6
13

=class="stub"2
5
×class="stub"7
13
+class="stub"2
5
×class="stub"6
13

=class="stub"2
5
×(class="stub"7
13
+class="stub"6
13

=class="stub"2
5
×1
=class="stub"2
5

(4)10-(class="stub"2
5
+class="stub"3
5
×2)
=10-(class="stub"2
5
+class="stub"6
5

=10-1class="stub"3
5

=8class="stub"2
5

(5)class="stub"7
15
+class="stub"1
4
×class="stub"12
5
-class="stub"3
5

=class="stub"7
15
+class="stub"3
5
-class="stub"3
5

=class="stub"7
15

(6)[(class="stub"7
5
-1)÷class="stub"2
5
class="stub"5
4

=[class="stub"2
5
÷class="stub"2
5
class="stub"5
4

=1×class="stub"5
4

=1class="stub"1
4

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