3÷〔9×(127-136)〕×1293.6÷〔(6-2.88)×(578-1.875)〕7.05×37+64×7.05-7.05(229×45+229×6.2-5.8×229-15÷920)×920

题目简介

3÷〔9×(127-136)〕×1293.6÷〔(6-2.88)×(578-1.875)〕7.05×37+64×7.05-7.05(229×45+229×6.2-5.8×229-15÷920)×920

题目详情

3÷〔9×(
1
27
-
1
36
)〕×12
93.6÷〔(6-2.88)×(5
7
8
-1.875)〕
7.05×37+64×7.05-7.05
(2
2
9
×
4
5
+2
2
9
×6.2-5.8×2
2
9
-
1
5
÷
9
20
9
20

8
4
5
÷〔7.8+
1
4
×(2.75+1.25)〕
8.1÷(4
1
7
-0.05×70
)÷1
2
7
题型:解答题难度:中档来源:不详

答案

(1)3÷[9×(class="stub"1
27
-class="stub"1
36
)]×12,
=3÷[9×class="stub"1
27
-class="stub"1
36
×9]×12,
=3÷[class="stub"1
3
-class="stub"1
4
]×12,
=3÷class="stub"1
12
×12,
=36×12,
=432;

(2)93.6÷[(6-2.88)×(5class="stub"7
8
-1.875)],
=93.6÷[3.12×4],
=93.6÷12.48,
=7.5;

(3)7.05×37+64×7.05-7.05,
=7.05×(37+64-1),
=7.05×100,
=705;

(4)(2class="stub"2
9
×class="stub"4
5
+2class="stub"2
9
×6.2-5.8×2class="stub"2
9
-class="stub"1
5
÷class="stub"9
20
)×class="stub"9
20

=(class="stub"20
9
×0.8+class="stub"20
9
×6.2-5.8×class="stub"20
9
-class="stub"20
9
×0.2)×class="stub"9
20

=[class="stub"20
9
×(0.8+6.2-5.8-0.2)]×class="stub"9
20

=[class="stub"20
9
×1]×class="stub"9
20

=class="stub"20
9
×class="stub"9
20

=1;

(5)8class="stub"4
5
÷[7.8+class="stub"1
4
×(2.75+1.25)],
=8class="stub"4
5
÷[7.8+class="stub"1
4
×4],
=8class="stub"4
5
÷(7.8+1),
=8.8÷8.8,
=1;

(6)8.1÷(4class="stub"1
7
-0.05×70
)÷1class="stub"2
7

=8.1÷(4class="stub"1
7
-3.5)÷1class="stub"2
7

=class="stub"81
10
÷class="stub"9
14
÷class="stub"9
7

=class="stub"81
10
×class="stub"14
9
×class="stub"7
9

=class="stub"49
5

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