999×778+333×666的结果等于多少.( ) A.99900 B.999000 C.9990000 D.990000
问题描述:
999×778+333×666的结果等于多少.( )
A. 99900
B. 999000
C. 9990000
D. 990000
答
999×778+333×666,
=999×778+333×3×222,
=999×778+999×222,
=(778+222)×999,
=1000×999,
=999000.
故选:B.