直接写得数．×4= += += ÷=25÷= ﹣= ÷5= ×=2÷= ﹣= ×12= 2﹣﹣=
8÷÷12÷．
口算题．= 3=÷6= 6=====
======
计算．
计算 6÷ 10÷ 24÷ ．
×4= 
+
= 
+
= 
÷
=
= 
﹣
= 
×
=
= 
﹣
= 
=
÷12
÷
．
= 3
=
÷6=
=
=
=
=
=
=
=
=
=
=
=
．
10÷
24÷
．
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