一根铁丝正好能围成一个边长为4dm的正方形，如果用这根铁丝围成长是6dm的长方形，它的面积有多大？
直接写出得数．×4= 0.37+1.7= 8.4÷0.7= 3×25%=﹣= 1.8×= 44÷=÷= 2×0.125×8=××= 1÷×=×÷×=
直接写结果：﹣= 1﹣+=÷= 0÷= 0.6×0.6= 4.6+4=
直接写出得数．======== 1.5×0.4= 10÷2.5= 2.4×5= 0.78÷1.3=
（1）3﹣1=（2）0.6÷=（3）75×10%= （4）+×4=（5）48×（﹣）=．
0.875+=== 1.25×0.16×8= 1÷0.5×2==
×4= 0.37+1.7= 8.4÷0.7= 3×25%=
﹣
= 1.8×
= 44÷
=
÷
=
×
×
= 1÷
×
=
×
÷
×
=
﹣
= 1﹣
÷
=
= 0.6×0.6= 4.6+4=
=
=
=
=
=
=
=
=
=（2）0.6÷
=（3）75×10%=
+
×4=（5）48×（
﹣
）=．
=
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