问题
解答题
计算各题,能简便运算的要写出简算过程. [1-(
36×(
85×
(
|
答案
(1)[1-(
+1 4
)]÷3 8 1 4
=[1-
]÷5 8 1 4
=
÷3 8 1 4
=1.5;
(2)36×(
+1 4
+1 6
)1 9
=36×
+36×1 4
+36×1 6 1 9
=9+6+4
=19;
(3)85×3 86
=86×
-1×3 86 3 86
=3-3 86
=2
;83 86
(4)
×17+13×3 5 3 5
=(17+13)×3 5
=30×3 5
=18;
(5)(
+1 3
-1 4
)×241 24
=
×24+1 3
×24-1 4
×241 24
=8+6-1
=13;
(6)
÷[4 9
-(5 6
-1 3
)]1 6
=
÷[4 9
+5 6
-1 6
]1 3
=
÷[1-4 9
]1 3
=
÷4 9 2 3
=
.2 3