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列递等式计算.(1)78−35+18−25=(2)56÷710×57=(3)(1112−16)÷118×13=(4)14×1439−1439÷14=(5)119÷[3225−(32.4−13×0.25)]×12=(6)2012−614×252+123÷416=.
题目详情
列递等式计算.
(1)
−
+
−
=
(2)56÷
×
=
(3)(
−
)÷
×
=
(4)14×
−
÷14=
(5)1
÷[32
−(32.4−
×0.25)]×12=
(6)
=.
(1)
7 |
8 |
3 |
5 |
1 |
8 |
2 |
5 |
(2)56÷
7 |
10 |
5 |
7 |
(3)(
11 |
12 |
1 |
6 |
1 |
18 |
1 |
3 |
(4)14×
14 |
39 |
14 |
39 |
(5)1
1 |
9 |
2 |
5 |
1 |
3 |
(6)
20
| ||||||
2+1
|
▼优质解答
答案和解析
(1)
−
+
−
=
+
-(
+
)
=1-1
=0;
(2)56÷
×
=56×
×
=
;
(3)(
−
)÷
×
=
×18×
=
;
(4)14×
−
÷14
=14×
-
×
=
×(14-
)
=
×
=5;
(5)1
÷[32
−(32.4−
×0.25)]×12
=1
÷[32
-(32.4-
)]×12
=1
÷[32
-32.4+
]×12
=
×12×12
=160;
(6)
=(20
-6
×
)÷(2+1
÷4
)
=(20
-
×
)÷(2+
×
)
=(20
-2
)÷(2+
)
=18×
=
.
7 |
8 |
3 |
5 |
1 |
8 |
2 |
5 |
=
7 |
8 |
1 |
8 |
3 |
5 |
2 |
5 |
=1-1
=0;
(2)56÷
7 |
10 |
5 |
7 |
=56×
10 |
7 |
5 |
7 |
=
400 |
7 |
(3)(
11 |
12 |
1 |
6 |
1 |
18 |
1 |
3 |
=
3 |
4 |
1 |
3 |
=
9 |
2 |
(4)14×
14 |
39 |
14 |
39 |
=14×
14 |
39 |
14 |
39 |
1 |
14 |
=
14 |
39 |
1 |
14 |
=
14 |
39 |
195 |
14 |
=5;
(5)1
1 |
9 |
2 |
5 |
1 |
3 |
=1
1 |
9 |
2 |
5 |
1 |
12 |
=1
1 |
9 |
2 |
5 |
1 |
12 |
=
10 |
9 |
=160;
(6)
20
| ||||||
2+1
|
=(20
1 |
2 |
1 |
4 |
2 |
5 |
2 |
3 |
1 |
6 |
=(20
1 |
2 |
25 |
4 |
2 |
5 |
5 |
3 |
6 |
25 |
=(20
1 |
2 |
1 |
2 |
2 |
5 |
=18×
5 |
12 |
=
15 |
2 |
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