Question

999乘778+333乘666 怎么简便计算？

Answer 1

999*778+333*666
=999*778+333*222*3
=999*778+333*3*222
=999*778+999*222
=999*（778+222）
=999*1000
=999000

Answer 2

原式＝999×778+333×3×222
＝999×778+999×222
＝999×（778+222）
＝999×1000
＝999000

Answer 3

999*778+333*3*222
=999*（778+222）
=999*1000
=9990000

Answer 4

999x778+333x666
=999X778+333X3Ⅹ222
=999Ⅹ(778+222)
=999X1000
=999000

Answer 5

999*778+333*666
=999*778+333*222*3
=999*778+333*3*222
=999*778+999*222
=999*（778+222）
=999*1000
=999000