异分母分数除法怎么运算
异分母除法计算先转化成乘法再按乘法法则计算异分母分数相乘把分子乘分子15道异分母分数乘除法（1/2）(4/5)=2/5,(3/10)÷（1/5）3/2,(17/42)*(14倘若为异分母分数的加减，则需要先进行通分，然后进行加减运算。最终的计算结果能约以上就是异分母分数加减的运算方法。分数的运算和自然数的运算一样，是数学解题的基
异分母分数乘除法有简便方法因为异分母分数乘除法计算步骤较多，容易出错从而直接进行通分和约分计算，简化运算。yi fen mu fen shu cheng chu fa you jian bian fang fa yin wei yi fen mu fen shu cheng chu fa ji suan bu zhou jiao duo ，rong yi chu cuo " cong er zhi jie jin xing tong fen he yue fen ji suan ，jian hua yun suan 。
1、整数加、减计算法则： 1)要把相同数位对齐，再把相同计数单位上的数相加或相减； 7+2=9 2)哪一位满十就向前一位进.9+6=15 2、小数加、减法的计算法则： 1)计算小数加、减法，先把各数的小数点对齐(也就是把相同数位上的数对齐),5.2+4.7=9.9 2)再按照整数加、减法的法则进行计算，最后在得数里对齐横线上的小数点点上小数点.4.7+9.8=14.5 (得数的小数部分末尾有0,一li jie fen shu chu fa yun suan de suan li ，shi xian fen shu yun suan yu zheng shu 、xiao shu yun suan suan li de yi zhi xing 。er " yi fen mu fen shu chu fa suan li de tan jiu 1 . chu shi li ti ，chu le zhuang shi jiao shi ，mei shu zu de lao shi he tong xue "
tang ruo wei yi fen mu fen shu de jia jian ，ze xu yao xian jin xing tong fen ，ran hou jin xing jia jian yun suan 。zui zhong de ji suan jie guo neng yue " yi shang jiu shi yi fen mu fen shu jia jian de yun suan fang fa 。fen shu de yun suan he zi ran shu de yun suan yi yang ，shi shu xue jie ti de ji " 1 、zheng shu jia 、jian ji suan fa ze : 1 ) yao ba xiang tong shu wei dui qi , zai ba xiang tong ji shu dan wei shang de shu xiang jia huo xiang jian ; 7 + 2 = 9 2 ) na yi wei man shi jiu xiang qian yi wei jin . 9 + 6 = 1 5 2 、xiao shu jia 、jian fa de ji suan fa ze : 1 ) ji suan xiao shu jia 、jian fa , xian ba ge shu de xiao shu dian dui qi ( ye jiu shi ba xiang tong shu wei shang de shu dui qi ) , 5 . 2 + 4 . 7 = 9 . 9 2 ) zai an zhao zheng shu jia 、jian fa de fa ze jin xing ji suan , zui hou zai de shu li dui qi heng xian shang de xiao shu dian dian shang xiao shu dian . 4 . 7 + 9 . 8 = 1 4 . 5 ( de shu de xiao shu bu fen mo wei you 0, yi "
yi fen mu chu fa ji suan xian zhuan hua cheng cheng fa zai an cheng fa fa ze ji suan yi fen mu fen shu xiang cheng ba fen zi cheng fen zi " 1 5 dao yi fen mu fen shu cheng chu fa （1 / 2 ）* ( 4 / 5 ) = 2 / 5 , ( 3 / 1 0) ÷ （1 / 5 ）= 3 / 2 , ( 1 7 / 4 2 ) * ( 1 4 " 理解分数除法运算的算理，实现分数运算与整数、小数运算算理的一致性。二异分母分数除法算理的探究1.出示例题，除了装饰教室，美术组的老师和同学