问题
解答题
脱式计算题: (1)1.625×2005+2005×
(2)400-14
|
答案
(1)1.625×2005+2005×
-2005,3 8
=2005×(1.625+0.375-1),
=2005×(2-1),
=2005×1,
=2005;
(2)400-14
-8513 27
.14 27
=400-(14
+8513 27
),14 27
=400-100,
=300.
脱式计算题: (1)1.625×2005+2005×
(2)400-14
|
(1)1.625×2005+2005×
-2005,3 8
=2005×(1.625+0.375-1),
=2005×(2-1),
=2005×1,
=2005;
(2)400-14
-8513 27
.14 27
=400-(14
+8513 27
),14 27
=400-100,
=300.