计算(能简算的要简算).(3618÷18-145)×206÷35-35÷6920÷[12×(25+45)]125×25×323.5×9.8+3.5×0.2512×113-14÷13.-数学

题目简介

计算(能简算的要简算).(3618÷18-145)×206÷35-35÷6920÷[12×(25+45)]125×25×323.5×9.8+3.5×0.2512×113-14÷13.-数学

题目详情

计算(能简算的要简算).
(3618÷18-145)×20
3
5
-
3
5
÷6
9
20
÷[
1
2
×(
2
5
+
4
5
)]
125×25×323.5×9.8+3.5×0.2
5
12
×
1
13
-
1
4
÷13.
题型:解答题难度:中档来源:不详

答案

(3618÷18-145)×20,
=(201-145)×20,
=56×20,
=1120;

class="stub"3
5
-class="stub"3
5
÷6,
=6×class="stub"5
3
-class="stub"3
5
×class="stub"1
6

=10-class="stub"1
10

=9class="stub"9
10


class="stub"9
20
÷[class="stub"1
2
×(class="stub"2
5
+class="stub"4
5
)],
=class="stub"9
20
÷[class="stub"1
2
×class="stub"6
5
],
=class="stub"9
20
÷class="stub"3
5

=class="stub"9
20
×class="stub"5
3

=class="stub"3
4


125×25×32,
=125×25×(4×8),
=(125×8)×(25×4),
=1000×100,
=100000;

3.5×9.8+3.5×0.2,
=3.5×(9.8+0.2),
=3.5×10,
=35;

class="stub"5
12
×class="stub"1
13
-class="stub"1
4
÷13,
=class="stub"5
12
×class="stub"1
13
-class="stub"1
4
×class="stub"1
13

=(class="stub"5
12
-class="stub"1
4
)×class="stub"1
13

=class="stub"1
6
×class="stub"1
13

=class="stub"1
78

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