大于0.9995而小于0.9997的小数只有0.9996. .(判断对错)
= ÷12= (填小数).
12÷ =0.75=.
填适当的数: ÷5=0.6== :40.
5÷7= :28=.
2÷ ==0.4= ÷20= %= 成= 折.