计算下面各题(要写出主要过程).18÷23-231÷(12+15)4.5+0.5×10(34+16)×4337.6-(1.6+23)0.35×25÷1.457×7÷57×7(1.2-1.2÷1.2)÷

题目简介

计算下面各题(要写出主要过程).18÷23-231÷(12+15)4.5+0.5×10(34+16)×4337.6-(1.6+23)0.35×25÷1.457×7÷57×7(1.2-1.2÷1.2)÷

题目详情

计算下面各题( 要写出主要过程).
18÷
2
3
-
2
3
1÷(
1
2
+
1
5
4.5+0.5×10
3
4
+
1
6
)×
4
33
7.6-(1.6+
2
3
0.35×
2
5
÷1.4
5
7
×7÷
5
7
×7
(1.2-1.2÷1.2)÷1.2.
题型:解答题难度:中档来源:不详

答案

18÷class="stub"2
3
-class="stub"2
3

=18×class="stub"3
2
-class="stub"2
3

=27-class="stub"2
3

=26class="stub"1
3


1÷(class="stub"1
2
+class="stub"1
5
),
=1÷class="stub"7
10

=1×class="stub"10
7

=class="stub"10
7


4.5+0.5×10,
=4.5+5,
=9.5;

class="stub"3
4
+class="stub"1
6
)×class="stub"4
33

=(class="stub"9
12
+class="stub"2
12
)×class="stub"4
33

=class="stub"11
12
×class="stub"4
33

=class="stub"1
9


7.6-(1.6+class="stub"2
3
),
=7.6-1.6-class="stub"2
3

=5class="stub"1
3
0.35×class="stub"2
5
÷1.4,
=0.14÷1.4,
=0.1;

class="stub"5
7
×7÷class="stub"5
7
×7,
=5×class="stub"7
5
×7,
=49;

(1.2-1.2÷1.2)÷1.2,
=(1.2-1)÷1.2,
=0.2÷1.2,
=class="stub"1
6

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