490除以8，商是多少，余数是多少？
直接写出得数．========
口算．== 5﹣== 0×1= 1÷===
直接写得数．========
直接写得数+=÷7=×=÷=×8= 9÷= 15×=﹣=÷=×=×=÷=
直接写出得数．+=×=÷6=×8=+= 2﹣= 0+=÷= 1÷=﹣=
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