小馬在做小數(shù)乘法題時不小心把一個一位小數(shù)看成了整數(shù),因他漏看了小數(shù)點(diǎn),結(jié)果比原數(shù)多了607.5,原數(shù)是多少

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設(shè)原數(shù)為A漏看了一位小數(shù)，即乘積增大10倍。因此：607.5 = 9*A === A = 67.5原數(shù)是 67.5