简便计算:111*54+666*91 999*999+1999是递等式!格式如:180-80/10*5=180-8*5=180-40=140
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 20:51:32
![简便计算:111*54+666*91 999*999+1999是递等式!格式如:180-80/10*5=180-8*5=180-40=140](/uploads/image/z/604332-36-2.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%EF%BC%9A111%2A54%2B666%2A91+999%2A999%2B1999%E6%98%AF%E9%80%92%E7%AD%89%E5%BC%8F%21%E6%A0%BC%E5%BC%8F%E5%A6%82%EF%BC%9A180-80%2F10%2A5%3D180-8%2A5%3D180-40%3D140)
简便计算:111*54+666*91 999*999+1999是递等式!格式如:180-80/10*5=180-8*5=180-40=140
简便计算:111*54+666*91 999*999+1999
是递等式!
格式如:180-80/10*5
=180-8*5
=180-40
=140
简便计算:111*54+666*91 999*999+1999是递等式!格式如:180-80/10*5=180-8*5=180-40=140
111*54+666*91
=666*9+666*91
=666(9+91)
=66600
999*999+1999
=999²+2×999+1
=(999+1)²
=1000 000
111*54+666*91
=111*54+111*546
=111*(54+546)
=111*600
=66600