不對(duì),
6.5*8.4=54.6一位小數(shù)
6.5*8.4的積是兩位小數(shù),
6.5*8.4的積是兩位小數(shù),
數(shù)學(xué)人氣:799 ℃時(shí)間:2020-05-11 12:01:45
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