★★★★★★★★★★写成加法算式是 ,写成乘法算式是 ,你能想到哪句口诀 .
8÷______==2:______=0.4=______%=______成.
5:4=______÷20=______%=
9÷______=75%=______:8==______(填小数)
=______÷______=60%=______:______=______小数.
2.5:______==1.25=25÷______=______%.