问题
解答题
简便运算
|
答案
25.3×
+74.7÷4,1 4
=25.3×
+74.7×1 4
,1 4
=(25.3+74.7)×
,1 4
=100×
,1 4
=25;
(2)125×32×25,
=125×8×4×25,
=(125×8)×(4×25),
=100×1000,
=100000.
简便运算
|
25.3×
+74.7÷4,1 4
=25.3×
+74.7×1 4
,1 4
=(25.3+74.7)×
,1 4
=100×
,1 4
=25;
(2)125×32×25,
=125×8×4×25,
=(125×8)×(4×25),
=100×1000,
=100000.