列竖式计算．（①计算并验算．）①238÷8验算 ②93×46 ③42×25④842÷7 ⑤318÷3 ⑥24.7+8.1．
直接写出得数．0.83+0.27= 2.9×100= 50÷1000= ×10=0.7 80÷ =0.8 +=5.6+4= 0.13×1000= ﹣0.35=
直接写出得数．+= ﹣+= += ﹣= +=+= ++= ﹣= += 3﹣﹣=
直接写出得数﹣= ﹣= ﹣= +=+= ﹣= += ﹣=
直接写出得数．+= ﹣= += ﹣=10﹣﹣= = = ==．
直接写得数= = = == 1﹣= 1﹣= =
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﹣0.35=+=﹣0.35=
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