48÷4= 540÷3= 33×27≈
50×80= 0÷8= 357÷9≈
①324÷4( )
②648÷3( )
③552÷6( )
④546÷4( )
68+32= 10-0.6= 1.25×80= 0.8÷0.04=
2.4÷ = × = 5×8%= ÷ =