奥数题六年级化繁为简73*(74/75)
奥数题六年级化繁为简73*(74/75)
日期:2021-06-24 08:14:06 人气:1
73×74/75
=(75-2)×74/75
=75×74/75-2×74/75
=74-2×74/75
=74-2+2/75
=72又2/75
=(75-2)×74/75
=75×74/75-2×74/75
=74-2×74/75
=74-2+2/75
=72又2/75
奥数题六年级化繁为简73*(74/75)