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(1)(-4.25)×89-(15−123)(2)(-7)+(-123)-(13−278)(3)(113−256−349)×(-715)(4)(227−1135)×114−215(5)−113+0.4312×217(6)5.2×38+4.625×515−15.6.

题目详情
8
9
-(
1
5
−1
2
3

(2)(-7)+(-1
2
3
)-(
1
3
−2
7
8

(3)(1
1
3
−2
5
6
−3
4
9
)×(-7
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
8
9
8899
1
5
−1
2
3

(2)(-7)+(-1
2
3
)-(
1
3
−2
7
8

(3)(1
1
3
−2
5
6
−3
4
9
)×(-7
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
1
5
1155
2
3
2233
1
2
3
)-(
1
3
−2
7
8

(3)(1
1
3
−2
5
6
−3
4
9
)×(-7
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
2
3
2233
1
3
−2
7
8

(3)(1
1
3
−2
5
6
−3
4
9
)×(-7
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
1
3
1133
7
8
7788
1
1
3
−2
5
6
−3
4
9
)×(-7
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
1
3
1133
5
6
5566
4
9
44997
1
5

(4)(2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
1
5
1155
2
2
7
−1
1
35
)×1
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
2
7
2277
1
35
1135351
1
4
−2
1
5

(5)
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
1
4
1144
1
5
1155
−1
1
3
+0.4
3
1
2
×2
1
7

(6)5.2×
3
8
+4.625×5
1
5
−15.6.
−1
1
3
+0.4
3
1
2
×2
1
7
−1
1
3
+0.4−1
1
3
+0.4
1
3
11333
1
2
×2
1
7
3
1
2
×2
1
7
1
2
1122
1
7
1177
5.2×
3
8
+4.625×5
1
5
−15.6.
3
8
3388
1
5
1155
▼优质解答
答案和解析
(1)(-4.25)×89-(15−123),=(-4.25)×89+1715,=-349+1715,=-21445;(2)(-7)+(-123)-(13−278),=(-7+278)-(123+13),=-418-2,=-618;(3)(113−256−349)×(-715),=(-8918)×(-715...