499×999+999简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 03:21:42
499×999+999简便运算
499×999+999简便运算
499×999+999简便运算
499×999+999=(499+1)×999=500×999=499500
=500x999=500x1000-500=49950
=(499+1)×999
=500×999
=500×1000-500
=499500
499×999+999简便运算
499×999+999简便运算
499×999+999简便运算
499×999+999=(499+1)×999=500×999=499500
=500x999=500x1000-500=49950
=(499+1)×999
=500×999
=500×1000-500
=499500