1.4.2 有理数的除法第1课时 有理数的除法,R七年级上册,新课导入,我们在前面学习有理数的减法时，是借助于逆运算把它转化为加法来进行的.大家知道除法的逆运算是乘法，那么有理数的除法运算是不是也是借助于逆运算转化为乘法来进行的呢？这节课我们就来学习有理数的除法,学习目标： 1能表述出有理数除法法则. 2会运用法则进行有理数除法运算,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,推进新课,有理数除法法则,知识点1,知识回顾,你能很快地说出下列各数的倒数吗,1,7,1,5,0,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,除以一个负数等于乘这个负数的倒数,因为(2)(4)8,所以 8(4)= 2,2,2,0,因为 2(4)8,所以(8)(4)2,因为 0(4)0,所以 0(4)0,有理数除法法则,除以
