直接写得数．42×3= 130×5= 450×2=34×3= 16×6= 37×2=290×3= 19×5= 12×5=320×2= 260×4= 12×7=
计算下面各题． ．
= × ==．
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 ．
．
= × =
=
．
×2=
×
=
=
=
×
= 1×
=
×0= 3×
=
×
=
×12=
×
=
=
×
=
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