简便运算5+55+555+5555+55555=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 21:47:42
![简便运算5+55+555+5555+55555=?](/uploads/image/z/131496-24-6.jpg?t=%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%975%2B55%2B555%2B5555%2B55555%3D%3F)
简便运算5+55+555+5555+55555=?
简便运算5+55+555+5555+55555=?
简便运算5+55+555+5555+55555=?
5*5 +50*4 +500*3 +5000*2 +50000
=25 +200 +1500 +10000 +50000
=61725
或者:
5+55+555+5555+55555
=5 + 5*11 +5*111 +5*1111 +5*11111
=5*(1+11+111+1111+11111)
=5*12345
=61725
5+55+555+5555+55555=
12345*5=
61725
简单
5+55+555+5555+55555
=5×(1+11+111+1111+11111)
=5×12345
=61725