班级板报长3米，宽2米．为了把板报装饰得更漂亮，要在它的一周围上边框，边框长多少米？
直接写得数+=﹣=×=×=×÷×=+=×0+3= 3+1.75=÷=（+）×=
直接写得数．+0.625= 24×=÷9= （+）×12= 12×25%=÷=
直接写出得数== 3.14×8== 1﹣40%=== 52=
口算．+=×4=÷=×= 15÷=÷8= 0÷=﹣=
直接写得数．﹣=÷12= 15×= 36÷=+=×12=÷=×=××16= 1÷÷=÷2÷=×9÷×9=
+
=
﹣
=
×
=
×
=
×
÷
=
=
×0+3= 3
+1.75=
÷
=（
+
）×
=
+0.625= 24×
=
÷9=
+
）×12= 12×25%=
÷
=
=
= 3.14×8=
=
=
= 52=
+
=
×4=
÷
×
=
=
÷8= 0÷
=
﹣
=
﹣
=
÷12= 15×
= 36÷
=
+
=
÷
=
×
=
×
×16= 1÷
÷
÷2÷
=
×9÷
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