几道运算性质题(很简单)加法结合律:a+b+c=( )=( )减法的运算性质:a减(b减c)=( )除法的运算性质(多题):a除以(b乘c)=( )a除以(b除以c)=( )(a+b)除以c=( )(a减b)除以c=( )
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![几道运算性质题(很简单)加法结合律:a+b+c=( )=( )减法的运算性质:a减(b减c)=( )除法的运算性质(多题):a除以(b乘c)=( )a除以(b除以c)=( )(a+b)除以c=( )(a减b)除以c=( )](/uploads/image/z/2674521-9-1.jpg?t=%E5%87%A0%E9%81%93%E8%BF%90%E7%AE%97%E6%80%A7%E8%B4%A8%E9%A2%98%EF%BC%88%E5%BE%88%E7%AE%80%E5%8D%95%EF%BC%89%E5%8A%A0%E6%B3%95%E7%BB%93%E5%90%88%E5%BE%8B%EF%BC%9Aa%2Bb%2Bc%3D%28+%29%3D%28+%29%E5%87%8F%E6%B3%95%E7%9A%84%E8%BF%90%E7%AE%97%E6%80%A7%E8%B4%A8%EF%BC%9Aa%E5%87%8F%EF%BC%88b%E5%87%8Fc%29%3D%28+%29%E9%99%A4%E6%B3%95%E7%9A%84%E8%BF%90%E7%AE%97%E6%80%A7%E8%B4%A8%EF%BC%88%E5%A4%9A%E9%A2%98%EF%BC%89%EF%BC%9Aa%E9%99%A4%E4%BB%A5%EF%BC%88b%E4%B9%98c%29%3D%28+%29a%E9%99%A4%E4%BB%A5%EF%BC%88b%E9%99%A4%E4%BB%A5c%29%3D%28+%29%28a%2Bb%29%E9%99%A4%E4%BB%A5c%3D%28+%29%28a%E5%87%8Fb%29%E9%99%A4%E4%BB%A5c%3D%28+%29)
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