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用递等式计算5512-(178÷412+34×115)1012÷[(3.5+2.8)×17]3÷78−34÷3-34×314×3.2+2.8÷2354-(10.9-525×113)7.8×[32×(1−58)+3.6].
题目详情
用递等式计算
5
-(1
÷4
+
×1
) 10
÷[(3.5+2.8)×
] 3÷
−
÷3-
×3 5
-(1
÷4
+
×1
)
-(1
÷4
+
×1
)
5 5 12 12
÷4
+
×1
)
7 7 8 8
1 1 2 2
×1
)
3 3 4 4
1 1 5 5 10
÷[(3.5+2.8)×
]
÷[(3.5+2.8)×
]
1 1 2 2
]
1 1 7 7 3÷
−
÷3-
×3 ÷
−
÷3-
×3
7 7 8 8
3 3 4 4
×3
3 3 4 4
×3.2+2.8÷2
4-(10.9-5
×1
) 7.8×[32×(1−
)+3.6].
×3.2+2.8÷2
×3.2+2.8÷2
1 1 4 4 ÷2
3 3 5 5 4-(10.9-5
×1
)
×1
)
2 2 5 5 1
)
1 1 3 3 7.8×[32×(1−
)+3.6]. (1−
)+3.6].
5 5 8 8
5
| 10
| 3÷
| ||||||||||||||||||||
| 4-(10.9-5
| 7.8×[32×(1−
|
5
| 10
| 3÷
| ||||||||||||||||||||
| 4-(10.9-5
| 7.8×[32×(1−
|
5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
1 |
2 |
1 |
7 |
7 |
8 |
3 |
4 |
3 |
4 |
5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
3 |
4 |
1 |
5 |
1 |
2 |
1 |
7 |
1 |
2 |
1 |
7 |
1 |
2 |
1 |
7 |
1 |
7 |
7 |
8 |
3 |
4 |
3 |
4 |
7 |
8 |
3 |
4 |
3 |
4 |
7 |
8 |
3 |
4 |
3 |
4 |
3 |
4 |
1 |
4 |
3 |
5 |
2 |
5 |
1 |
3 |
5 |
8 |
1 |
4 |
3 |
5 |
1 |
4 |
3 |
5 |
1 |
4 |
3 |
5 |
3 |
5 |
2 |
5 |
1 |
3 |
2 |
5 |
1 |
3 |
2 |
5 |
1 |
3 |
1 |
3 |
5 |
8 |
5 |
8 |
5 |
8 |
▼优质解答
答案和解析
(1)5
-(1
÷4
+
×1
),
=5
-(
+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
5 5 512 12 12-(1
÷4
+
×1
),
=5
-(
+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
7 7 78 8 8÷4
1 1 12 2 2+
×1
),
=5
-(
+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
3 3 34 4 4×1
1 1 15 5 5),
=5
-(
+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
5 5 512 12 12-(
+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
5 5 512 12 12+
),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
9 9 910 10 10),
═5
-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
5 5 512 12 12-
-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
5 5 512 12 12-
,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
9 9 910 10 10,
=5-
,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
9 9 910 10 10,
=4
;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 110 10 10;
(2)10
÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 12 2 2÷[(3.5+2.8)×
],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 17 7 7],
=10
÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 12 2 2÷[6.3×
],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 17 7 7],
=10
÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 12 2 2÷0.9,
=
;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
210 210 21018 18 18;
(3)3÷
−
÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
÷
7 7 78 8 8−
3 3 34 4 4÷3-
×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
3 3 34 4 4×3,
=
-
-
,
=
-(
+
),
=
-
,
=
;
(4)
24 24 247 7 7-
-
,
=
-(
+
),
=
-
,
=
;
(4)
1 1 14 4 4-
,
=
-(
+
),
=
-
,
=
;
(4)
9 9 94 4 4,
=
-(
+
),
=
-
,
=
;
(4)
24 24 247 7 7-(
+
),
=
-
,
=
;
(4)
1 1 14 4 4+
),
=
-
,
=
;
(4)
9 9 94 4 4),
=
-
,
=
;
(4)
24 24 247 7 7-
,
=
;
(4)
5 5 52 2 2,
=
;
(4)
13 13 1314 14 14;
(4)
举报
问题解析 问题解析
(1)先算小括号里的除法算式和乘法算式,再去括号里计算即可;
(2)先算小括号里的加法,再算中括号里的乘法,最后算括号外的除法;
(3)先求出除法算式和乘法算式,再运用减法的性质进行简算;
(4)先求出乘法算式和除法算式,再算加法;
(5)先算小括号里的乘法,再算小括号里的减法,最后算括号外的减法;
(6)先算小括号里的减法,再算中括号里的乘法,再算中括号里的加法,最后算括号外的乘法. (1)先算小括号里的除法算式和乘法算式,再去括号里计算即可;
(2)先算小括号里的加法,再算中括号里的乘法,最后算括号外的除法;
(3)先求出除法算式和乘法算式,再运用减法的性质进行简算;
(4)先求出乘法算式和除法算式,再算加法;
(5)先算小括号里的乘法,再算小括号里的减法,最后算括号外的减法;
(6)先算小括号里的减法,再算中括号里的乘法,再算中括号里的加法,最后算括号外的乘法.名师点评 名师点评
本题考点: 本题考点:
整数、分数、小数、百分数四则混合运算. 整数、分数、小数、百分数四则混合运算.
考点点评: 考点点评:
此题考查了整数、分数、小数四则混合运算的顺序,注意运算符号,细心计算即可. 此题考查了整数、分数、小数四则混合运算的顺序,注意运算符号,细心计算即可.
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5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
=5
5 |
12 |
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
12 |
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
=5
5 |
12 |
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
7 |
8 |
1 |
2 |
3 |
4 |
1 |
5 |
=5
5 |
12 |
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
3 |
4 |
1 |
5 |
=5
5 |
12 |
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
12 |
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
12 |
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
9 |
10 |
═5
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
12 |
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
12 |
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
9 |
10 |
=5-
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
9 |
10 |
=4
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
10 |
(2)10
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
2 |
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
7 |
=10
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
2 |
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
7 |
=10
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
2 |
=
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
210 |
18 |
(3)3÷
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
7 |
8 |
3 |
4 |
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
3 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
4 |
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
9 |
4 |
=
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
24 |
7 |
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
1 |
4 |
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
9 |
4 |
=
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
24 |
7 |
5 |
2 |
=
13 |
14 |
(4)
5 |
2 |
=
13 |
14 |
(4)
13 |
14 |
(4)
作业帮用户
2017-11-08
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作业帮用户作业帮用户
2017-11-082017-11-08
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- 问题解析
- (1)先算小括号里的除法算式和乘法算式,再去括号里计算即可;
(2)先算小括号里的加法,再算中括号里的乘法,最后算括号外的除法;
(3)先求出除法算式和乘法算式,再运用减法的性质进行简算;
(4)先求出乘法算式和除法算式,再算加法;
(5)先算小括号里的乘法,再算小括号里的减法,最后算括号外的减法;
(6)先算小括号里的减法,再算中括号里的乘法,再算中括号里的加法,最后算括号外的乘法.
(2)先算小括号里的加法,再算中括号里的乘法,最后算括号外的除法;
(3)先求出除法算式和乘法算式,再运用减法的性质进行简算;
(4)先求出乘法算式和除法算式,再算加法;
(5)先算小括号里的乘法,再算小括号里的减法,最后算括号外的减法;
(6)先算小括号里的减法,再算中括号里的乘法,再算中括号里的加法,最后算括号外的乘法.
(2)先算小括号里的加法,再算中括号里的乘法,最后算括号外的除法;
(3)先求出除法算式和乘法算式,再运用减法的性质进行简算;
(4)先求出乘法算式和除法算式,再算加法;
(5)先算小括号里的乘法,再算小括号里的减法,最后算括号外的减法;
(6)先算小括号里的减法,再算中括号里的乘法,再算中括号里的加法,最后算括号外的乘法.
- 名师点评
-
- 本题考点:
- 整数、分数、小数、百分数四则混合运算.
-
- 考点点评:
- 此题考查了整数、分数、小数四则混合运算的顺序,注意运算符号,细心计算即可.
- 本题考点:
- 整数、分数、小数、百分数四则混合运算.
- 本题考点:
- 整数、分数、小数、百分数四则混合运算.
- 考点点评:
- 此题考查了整数、分数、小数四则混合运算的顺序,注意运算符号,细心计算即可.
- 考点点评:
- 此题考查了整数、分数、小数四则混合运算的顺序,注意运算符号,细心计算即可.






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