巧算:2002/2003分之2001

问题描述:

巧算:2002/2003分之2001

2002/2003分之2001
=(2001+1)×2003/2001
=2003+2003/2001
=2004又2/2001

2002/2003分之2001
=2002×2003/2001
=(2001+1)×2003/2001
=2003+2003/2001
=2004又2/2001