2/5=l8:_=_:20=( )25=_÷40=_(填小数)
问题描述:
=l8:______=______:20=2 5
=______÷40=______(填小数) ( ) 25
答
=18:45=8:20=2 5
=16÷40=0.4;10 25
故答案为:45,8,10,16,0.4.