3.85= %= ÷ ==．
﹣ = ×=1．
商与除数的积，一定不等于被除数． ．
在横线里填上合适的数． ÷（54÷6）="8" ÷3﹣15=4．
若□=○÷3，那么□× =○；○+○=□+ ；□×9=○× ．
× = ×1=× =0.3× =+ =﹣ ．
=
．
= ×
=1．
× = ×1
=
× =0.3× =
+ =
﹣ ．
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