79乘25的简便计算
问题描述：
79乘25的简便计算
答
79*25
=(80-1)*25
=80*25-25
=2000-25
=1975.
答
=(79+1)*25-25
=2000-25
=1975
答
79X25
=(80-1)X25
=80X25-25
=20X4X25-25
=20X100-25
=2000-25
=1975
答
79x25=(80-1)x25=80x25-25=2000-25=1975
答
79乘25
=80x25-25
=2000-25
=1975
如追加其它问题,
答
除法才是最快的
79×25
=79×100÷4
=7900÷4
=1975