问题
解答题
下面各题,怎样计算简便就怎样算.
|
答案
(1)95.6×108-95.6×8
=95.6×(108-8)
=95.6×100
=9560;
(2)(8.1-8.1×
)÷5 6 9 4
=[8.1×(1-
)]÷5 6 9 4
=[8.1×
]÷1 6 9 4
=1.35÷9 4
=0.6;
(3)
-(2.8-14 5
)+5 7 2 7
=
-2.8+14 5
+5 7 2 7
=(
-2.8)+(14 5
+5 7
)2 7
=0+1
=1;
(4)9.4×
+0.25×1 4 3 5
=9.4×0.25+0.25×3 5
=(9.4+
)×0.253 5
=10×0.25
=2.5;
(5)
-[3 7
-(19 5
+14 5
)]4 7
=
-[3 7
-19 5
-14 5
]4 7
=
-[1-3 7
]4 7
=
-3 7 3 7
=0;
(6)
÷[(3 5
+1 5
)÷1 3
]2 9
=
÷[3 5
÷8 15
]2 9
=
÷3 5 12 5
=
.1 4