还有125-25+75能简便吗?
999x15è½ç®ä¾¿è¿ç®åï¼å¦æè½ï¼è¯·ååºæ¥
999x15
=15*ï¼1000-1ï¼
=15*1000-15
=14985
125ï¼25ï¼75è½ç®ä¾¿åï¼
125ï¼25ï¼75
=100+75
=175
ç´æ¥è®¡ç®
999x15
=15*ï¼1000-1ï¼
=15*1000-15
=14985
125ï¼25ï¼75è½ç®ä¾¿åï¼
125ï¼25ï¼75
=100+75
=175
ç´æ¥è®¡ç®
温馨提示:答案为网友推荐,仅供参考