除法简便运算练习题58*146/58*45-58
问题描述：
除法简便运算练习题58*146/58*45-58
答
简便运算练习
答
58*146/58*45-58
=146*45-58
=146/2*45*2-58
=73*90-58
=6570-58
=6512
答
=58*146/58*45-58*58*45/58*45=（58*146-58*58*45）/58*45=58（146-58*45）/58*45
=（146-58*45）/45=146/58-45=-42.482758620689
答
58*146/58*45-58
=146/45 -58
=(135+11)/45 -58
=3+11/45 -58
=11/45 -55
=-54-34/45
=-54 34/45