傍晚,当你面向太阳时,后面是 ,左面是 .
2:5=24: = :15== %= 成= 折.
: =1.4=70/ = %
=60%= ÷20=3: = (小数)
=6÷8==( ):20. 括号里的数字填在横线上.
÷8=0.25=4: =20: .