运用你学过的方法算125-0.25+72035×735+325×35-0.6(14+1÷27)÷217(16+38)×12×24123÷[(256-123)×27+13].-数学

题目简介

运用你学过的方法算125-0.25+72035×735+325×35-0.6(14+1÷27)÷217(16+38)×12×24123÷[(256-123)×27+13].-数学

题目详情

运用你学过的方法算
1
2
5
-0.25+
7
20
3
5
×7
3
5
+3
2
5
×
3
5
-0.6
1
4
+1÷
2
7
)÷2
1
7
1
6
+
3
8
)×12×24
1
2
3
÷[(2
5
6
-1
2
3
)×
2
7
+
1
3
].
题型:解答题难度:中档来源:不详

答案

(1)1class="stub"2
5
-0.25+class="stub"7
20

=1.4-0.25+0.35,
=1.15+0.35,
=1.5;

(2)class="stub"3
5
×7class="stub"3
5
+3class="stub"2
5
×class="stub"3
5
-0.6,
=class="stub"3
5
×7class="stub"3
5
+3class="stub"2
5
×class="stub"3
5
-class="stub"3
5
×1,
=class="stub"3
5
×(7class="stub"3
5
+3class="stub"2
5
-1),
=class="stub"3
5
×(11-1),
=class="stub"3
5
×10,
=6;

(3)(class="stub"1
4
+1÷class="stub"2
7
)÷2class="stub"1
7

=(class="stub"1
4
+class="stub"7
2
)×class="stub"7
15

=class="stub"15
4
×class="stub"7
15

=class="stub"7
4


(4)(class="stub"1
6
+class="stub"3
8
)×12×24,
=(class="stub"1
6
+class="stub"3
8
)×24×12,
=(class="stub"1
6
×24+class="stub"3
8
×24)×12,
=(4+9)×12,
=4×12+9×12,
=48+108,
=156;

(5)1class="stub"2
3
÷[(2class="stub"5
6
-1class="stub"2
3
)×class="stub"2
7
+class="stub"1
3
],
=1class="stub"2
3
÷[1class="stub"1
6
×class="stub"2
7
+class="stub"1
3
],
=1class="stub"2
3
÷[class="stub"7
6
×class="stub"2
7
+class="stub"1
3
],
=1class="stub"2
3
÷[class="stub"1
3
+class="stub"1
3
],
=class="stub"5
3
÷class="stub"2
3

=class="stub"5
2

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