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(2013•华亭县模拟)递等式计算,能简便运算的要用简便计算方法计算.800×84-24030÷27013.5×537+1312×347+13.512.2+3.05×(512-1.75×217)512×[(914-8.05+25)÷315].

题目详情
800×84-24030÷270 13.5×5
3
7
+13
1
2
×3
4
7
+13.5
12.2+3.05×(5
1
2
-1.75×2
1
7
5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
].
800×84-24030÷270 13.5×5
3
7
+13
1
2
×3
4
7
+13.5
800×84-24030÷27013.5×5
3
7
+13
1
2
×3
4
7
+13.5
5
3
7
+13
1
2
×3
4
7
+13.5
3
7
3377
1
2
×3
4
7
+13.5
1
2
1122
4
7
+13.5
4
7
4477 12.2+3.05×(5
1
2
-1.75×2
1
7
5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
].
12.2+3.05×(5
1
2
-1.75×2
1
7
1
2
-1.75×2
1
7
1
2
1122
1
7
1
7
11775
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
].
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
].
1
2
1122
1
4
-8.05+
2
5
)÷3
1
5
].
1
4
1144
2
5
)÷3
1
5
].
2
5
2255
1
5
].
1
5
1155
▼优质解答
答案和解析

(1)800×84-24030÷270,
=67200-89,
=67111;

(2)13.5×5
3
7
+13
1
2
×3
4
7
+13.5,
=13.5×5
3
7
+13.5×3
4
7
+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
5
3
7
333777+13
1
2
×3
4
7
+13.5,
=13.5×5
3
7
+13.5×3
4
7
+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222×3
4
7
+13.5,
=13.5×5
3
7
+13.5×3
4
7
+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
4
7
444777+13.5,
=13.5×5
3
7
+13.5×3
4
7
+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
5
3
7
333777+13.5×3
4
7
+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
4
7
444777+13.5,
=13.5×(5
3
7
+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
5
3
7
333777+3
4
7
+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
4
7
444777+1),
=13.5×10,
=135;

(3)12.2+3.05×(5
1
2
-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222-1.75×2
1
7
),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
7
111777),
=12.2+3.05×(5
1
2
-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222-3.75),
=12.2+3.05×1.75,
=12.2+5.3375,
=17.5375;

(4)5
1
2
×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222×[(9
1
4
-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
4
111444-8.05+
2
5
)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
2
5
222555)÷3
1
5
],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
5
111555],
=5
1
2
×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222×[(1.2+
2
5
)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
2
5
222555)÷3
1
5
],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
5
111555],
=5
1
2
×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
2
111222×[1.6÷3
1
5
],
=5
1
2
×0.5,
=2.75.
1
5
111555],
=5
1
2
×0.5,
=2.75.
1
2
111222×0.5,
=2.75.