一件商品九折优惠,这件商品比原来便宜5%. .(判断正误)
÷8==0.375=9÷ =.
= ÷ =9: == %= 折.
= ÷ = (填小数)
12÷ =0.75== :36= %
÷ =0.125=2÷ == %