75×73/76
=(76-1)×73/76
=76×73/76-1×73/76
=73-73/76
=72又3/76
75×73/74简便计算方法如下:75×73/74 =(74+1)×73/74 =74×73/74+1×73/74 =73又73/74 解题思路:观察两个因数,一个是75,另一个因数的分母是74,因此可以把75拆成74+1,然后代入原式进行计算。
原式=(76-1)x73/76
=76x73/76-73/76x1
=73-37/76
=72又9/19
75×73/76
=76×73/76-73/76
=73-73/76
=72又3/76
75×73/74