简便计算:17X9/16
问题描述:
简便计算:17X9/16
答
17X9/16
=(1+16)x9/16
=9/16+16x9/16
=9又9/16
简便计算:17X9/16
17X9/16
=(1+16)x9/16
=9/16+16x9/16
=9又9/16