问题
选择题
根据15×39=585,那么0.15×3.9=( )
A.58.5
B.5.85
C.0.585
D.0.0585
答案
因为0.15×3.9=(15÷100)×(39÷10),
=585÷1000,
=0.585,
故选:C.
根据15×39=585,那么0.15×3.9=( )
A.58.5
B.5.85
C.0.585
D.0.0585
因为0.15×3.9=(15÷100)×(39÷10),
=585÷1000,
=0.585,
故选:C.