用简便方法计算454+999*999+45
来源:学生学帮网 编辑:学帮网 时间:2024/07/11 09:06:20
用简便方法计算454+999*999+45
454+999*999+45
=499+999*999
=499+(500+499)*999
=(499+1)*999+500*999
=999*(500+500)
=999*1000
=999000
用简便方法计算454+999*999+45
454+999*999+45
=499+999*999
=499+(500+499)*999
=(499+1)*999+500*999
=999*(500+500)
=999*1000
=999000