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脱式计算.(1)8.6×99+8.6;(2)2558-534-4.25;(3)412÷[(12+34)×115];(4)[1-(12+38)]×89.

题目详情


5
8
-5
3
4
-4.25;
(3)4
1
2
÷[(
1
2
+
3
4
)×1
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
5
8
5588
3
4
-4.25;
(3)4
1
2
÷[(
1
2
+
3
4
)×1
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
3
4
3344
1
2
÷[(
1
2
+
3
4
)×1
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
1
2
1122
1
2
+
3
4
)×1
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
1
2
1122
3
4
)×1
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
3
4
3344
1
5
];
(4)[1-(
1
2
+
3
8
)]×
8
9
1
5
1155
1
2
+
3
8
)]×
8
9
1
2
1122
3
8
)]×
8
9
3
8
3388
8
9
8
9
8899
▼优质解答
答案和解析
(1)8.6×99+8.6                         =8.6×(99+1)=8.6×100  &nbs...