777×9+111 (简便)
问题描述:
777×9+111 (简便)
答
111*7*9+111=111*63+111=111*64=7104
答
777×9+111 =777*10-666=7770-666=7104
777×9+111 (简便)
111*7*9+111=111*63+111=111*64=7104
777×9+111 =777*10-666=7770-666=7104