看图列算式。比多几个?( )×( )-( )×( )=( )×( )=( )
3÷4=9: == (填小数).
7÷9== ÷ 15=31÷ .
:20==3: =0.75= %
0.125== :16=5÷ .
= :24=0.5= ÷8=.