计算39.3÷7.8,当商是5时,余数是( ) A.3 B.0.3 C.0.03
问题描述:
计算39.3÷7.8,当商是5时,余数是( )
A. 3
B. 0.3
C. 0.03
答
39.3-7.8×5
=39.3-39
=0.3
故选:B.