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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)×920845÷〔7.8+14×(2.75+1.25)〕8.1÷(417−0.05×70)÷127.
题目详情
3÷〔9×(
−
)〕×12
93.6÷〔(6-2.88)×(5
-1.875)〕
7.05×37+64×7.05-7.05
(2
×
+2
×6.2−5.8×2
−
÷
)×
8
÷〔7.8+
×(2.75+1.25)〕
8.1÷(4
−0.05×70)÷1
.
1 |
27 |
1 |
36 |
93.6÷〔(6-2.88)×(5
7 |
8 |
7.05×37+64×7.05-7.05
(2
2 |
9 |
4 |
5 |
2 |
9 |
2 |
9 |
1 |
5 |
9 |
20 |
9 |
20 |
8
4 |
5 |
1 |
4 |
8.1÷(4
1 |
7 |
2 |
7 |
▼优质解答
答案和解析
(1)3÷[9×(
−
)]×12,
=3÷[9×
−
×9]×12,
=3÷[
-
]×12,
=3÷
×12,
=36×12,
=432;
(2)93.6÷[(6-2.88)×(5
-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)(2
×
+2
×6.2−5.8×2
−
÷
)×
,
=(
×0.8+
×6.2-5.8×
-
×0.2)×
,
=[
×(0.8+6.2-5.8-0.2)]×
,
=[
×1]×
,
=
×
,
=1;
(5)8
÷[7.8+
×(2.75+1.25)],
=8
÷[7.8+
×4],
=8
÷(7.8+1),
=8.8÷8.8,
=1;
(6)8.1÷(4
−0.05×70)÷
1 |
27 |
1 |
36 |
=3÷[9×
1 |
27 |
1 |
36 |
=3÷[
1 |
3 |
1 |
4 |
=3÷
1 |
12 |
=36×12,
=432;
(2)93.6÷[(6-2.88)×(5
7 |
8 |
=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)(2
2 |
9 |
4 |
5 |
2 |
9 |
2 |
9 |
1 |
5 |
9 |
20 |
9 |
20 |
=(
20 |
9 |
20 |
9 |
20 |
9 |
20 |
9 |
9 |
20 |
=[
20 |
9 |
9 |
20 |
=[
20 |
9 |
9 |
20 |
=
20 |
9 |
9 |
20 |
=1;
(5)8
4 |
5 |
1 |
4 |
=8
4 |
5 |
1 |
4 |
=8
4 |
5 |
=8.8÷8.8,
=1;
(6)8.1÷(4
1 |
7 |
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