早教吧作业答案频道 -->其他-->
[(123×2+2.5)÷78−215]÷1.6[(514−4.25)×58]÷38+33÷116[(915−3.2)÷212]×[1÷(2.1−29100)]9.75+99.75+999.75+9999.75123−[(3.62×215+6.38÷712)×1.82−113×0.82]2890+56+78+71056+78+710.
题目详情
[(1
×2+2.5)÷
−2
]÷1.6
[(5
−4.25)×
]÷
+33÷
[(9
−3.2)÷2
]×[1÷(2.1−2
)]
9.75+99.75+999.75+9999.75
1
−[(3.62×
+6.38÷7
)×1.82−1
×0.82]
.[(1
×2+2.5)÷
−2
]÷1.6
[(5
−4.25)×
]÷
+33÷
[(9
−3.2)÷2
]×[1÷(2.1−2
)]
9.75+99.75+999.75+9999.75
1
−[(3.62×
+6.38÷7
)×1.82−1
×0.82]
.
2 2 3 3
7 7 8 8
1 1 5 5
[(5
−4.25)×
]÷
+33÷
[(9
−3.2)÷2
]×[1÷(2.1−2
)]
9.75+99.75+999.75+9999.75
1
−[(3.62×
+6.38÷7
)×1.82−1
×0.82]
.
1 1 4 4
5 5 8 8
3 3 8 8
11 11 6 6
[(9
−3.2)÷2
]×[1÷(2.1−2
)]
9.75+99.75+999.75+9999.75
1
−[(3.62×
+6.38÷7
)×1.82−1
×0.82]
.
1 1 5 5
1 1 2 2
9 9 100 100
1
−[(3.62×
+6.38÷7
)×1.82−1
×0.82]
.
2 2 3 3
2 2 15 15
1 1 2 2
1 1 3 3
.
2890+
+
+
2890+
+
+
5 5 6 6
7 7 8 8
7 7 10 10
+
+
+
+
5 5 6 6
7 7 8 8
7 7 10 10
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[(5
1 |
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5 |
8 |
3 |
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11 |
6 |
[(9
1 |
5 |
1 |
2 |
9 |
100 |
9.75+99.75+999.75+9999.75
1
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2890+
| ||||||
|
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[(5
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3 |
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11 |
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[(9
1 |
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1 |
2 |
9 |
100 |
9.75+99.75+999.75+9999.75
1
2 |
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2 |
15 |
1 |
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1 |
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2890+
| ||||||
|
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[(5
1 |
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11 |
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[(9
1 |
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1 |
2 |
9 |
100 |
9.75+99.75+999.75+9999.75
1
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2890+
| ||||||
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[(9
1 |
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1 |
2 |
9 |
100 |
9.75+99.75+999.75+9999.75
1
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15 |
1 |
2 |
1 |
3 |
2890+
| ||||||
|
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100 |
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2890+
| ||||||
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2890+
| ||||||
|
2890+
| ||||||
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▼优质解答
答案和解析
①[(1
×2+2.5)÷
-2
]÷1.6,
=[(
+
)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
2 2 23 3 3×2+2.5)÷
-2
]÷1.6,
=[(
+
)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
÷
7 7 78 8 8-2
]÷1.6,
=[(
+
)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
1 1 15 5 5]÷1.6,
=[(
+
)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
10 10 103 3 3+
)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
15 15 156 6 6)×
−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
8 8 87 7 7−
]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
−
11 11 115 5 5]÷1.6,
=[(
+
)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
20 20 206 6 6+
15 15 156 6 6)×
−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
8 8 87 7 7−
]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
−
11 11 115 5 5]×
,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8,
=[
×
−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
35 35 356 6 6×
8 8 87 7 7−
]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
−
11 11 115 5 5]×
,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8,
=[
−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
20 20 203 3 3−
]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
−
11 11 115 5 5]×
,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8,
=[
−
]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
100 100 10015 15 15−
33 33 3315 15 15]×
,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8,
=
×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
67 67 6715 15 15×
,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8,
=
,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
67 67 6724 24 24,
=2
;
②[(5
-4.25)×
]÷
+33÷
,
=
×
19 19 1924 24 24;
②[(5
-4.25)×
]÷
+33÷
,
=
×
1 1 14 4 4-4.25)×
]÷
+33÷
,
=
×
5 5 58 8 8]÷
+33÷
,
=
×
3 3 38 8 8+33÷
,
=
×
÷
11 11 116 6 6,
=
×
5 5 58 8 8×
举报
问题解析 问题解析
①②③⑤根据分数的四则混合运算的顺序进行计算,先算括号内部的,再计算括号外面的.④我们先加上4个1凑成整十,再减去4,即可求出答案.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算. ①②③⑤根据分数的四则混合运算的顺序进行计算,先算括号内部的,再计算括号外面的.④我们先加上4个1凑成整十,再减去4,即可求出答案.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.名师点评 名师点评
本题考点: 本题考点:
分数的四则混合运算;小数的巧算;繁分数的化简. 分数的四则混合运算;小数的巧算;繁分数的化简.
考点点评: 考点点评:
考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算. 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
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2 |
3 |
7 |
8 |
1 |
5 |
=[(
10 |
3 |
15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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2 |
3 |
7 |
8 |
1 |
5 |
=[(
10 |
3 |
15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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7 |
8 |
1 |
5 |
=[(
10 |
3 |
15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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1 |
5 |
=[(
10 |
3 |
15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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10 |
3 |
15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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15 |
6 |
8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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8 |
7 |
11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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11 |
5 |
=[(
20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
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20 |
6 |
15 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
8 |
7 |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
11 |
5 |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
5 |
8 |
=[
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
35 |
6 |
8 |
7 |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
11 |
5 |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
5 |
8 |
=[
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
20 |
3 |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
11 |
5 |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
5 |
8 |
=[
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
100 |
15 |
33 |
15 |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
5 |
8 |
=
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
67 |
15 |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
5 |
8 |
=
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
67 |
24 |
=2
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
19 |
24 |
②[(5
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
1 |
4 |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
举报
![]()
![]() ![]() |
5 |
8 |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
3 |
8 |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
11 |
6 |
=
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
5 |
8 |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
作业帮用户
2016-12-11
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![]()
![]() ![]() |
作业帮用户
2016-12-11
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- 问题解析
- ①②③⑤根据分数的四则混合运算的顺序进行计算,先算括号内部的,再计算括号外面的.④我们先加上4个1凑成整十,再减去4,即可求出答案.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.
- 名师点评
-
- 本题考点:
- 分数的四则混合运算;小数的巧算;繁分数的化简.
-
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.


作业帮用户
2016-12-11
举报

- 问题解析
- ①②③⑤根据分数的四则混合运算的顺序进行计算,先算括号内部的,再计算括号外面的.④我们先加上4个1凑成整十,再减去4,即可求出答案.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.
- 名师点评
-
- 本题考点:
- 分数的四则混合运算;小数的巧算;繁分数的化简.
-
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.


作业帮用户
2016-12-11
举报
作业帮用户作业帮用户
2016-12-112016-12-11
举报



- 问题解析
- ①②③⑤根据分数的四则混合运算的顺序进行计算,先算括号内部的,再计算括号外面的.④我们先加上4个1凑成整十,再减去4,即可求出答案.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.
⑥把分式的形式写成横式的形式然后运用乘法的分配律进行计算.
- 名师点评
-
- 本题考点:
- 分数的四则混合运算;小数的巧算;繁分数的化简.
-
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
- 本题考点:
- 分数的四则混合运算;小数的巧算;繁分数的化简.
- 本题考点:
- 分数的四则混合运算;小数的巧算;繁分数的化简.
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
- 考点点评:
- 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.






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