下图中阴影部分各是大正方形的几分之几？
口算显身手．×2= ×= =12﹣= ×= 1×=×0= 3×= ×=
口算题．×12= ×=60×= ×=
阴影部分是 平方米．如图求的是 的 是多少？列式计算 ．
计算下面各题：．
我是口算小能手．×= ×= ×=×= ×= ×=×= ×= ×=
×2= 
×
= 
=
= 
×
= 1×
=
×0= 3×
= 
×
=
×12= 
×
=
= 
×
=
．
×
= 
×
= 
×
=
×
= 
×
= 
×
=
×
= 
×
= 
×
=
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