计算36×25时,先把36和5相乘,再把36和2相乘,最后把两次乘得的结果相加. .
:20=0.8=12÷ == %= (填成数)
= %= : = (小数)
: =37.5%== ÷ = (填小数)
=0.75== : = %
= : =75%=3÷ = .(填小数)