某城市一日的天气预报为:多云转小雨,29℃~~18℃,降水概率80%,这一天一定会下雨 .
÷4=25%= : =8÷ = 折.
0.75= : = :25= 折= %= (成数)
10: ==0.625=5÷ = %
12: = ÷25== (小数)= %
:8=8÷ == %= 小数.