找出下面数列的规律,并根据规律在横线上填出适当的数。(1)81,64,49,36, ______ ,16, ______ ,4,1(2)1,2,4,8,16, ______ ,……
=15÷ = ÷8=七五折= %
9÷ =75%= :8== (填小数)
= (小数)
÷ ==== (小数)
=8÷10= %= : .