笔算并验算：25.78+72.49= 54.07﹣18.38=1.25×32= 2.55÷0.5=
下面各题怎样算简便就怎样算．6﹣﹣．
直接写得数．﹣= ﹣= += +=+= ﹣= ﹣= 0.3+=
脱式计算，能简算的要简算+++﹣﹣．
直接写出得数+= ﹣+= 3﹣= m﹣m=
直接写出得数．= = = =
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﹣
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