问题
选择题
346×1002×2=
A.639384
B.693384
C.693486
D.683584
答案
346×1002×2,
=(346×2)×(1000+2),
=692×1000+692×2,
=692000+1384,
=693384;
故应选:B.
346×1002×2=
A.639384
B.693384
C.693486
D.683584
346×1002×2,
=(346×2)×(1000+2),
=692×1000+692×2,
=692000+1384,
=693384;
故应选:B.