三年级数学下册二除数是一位数的除法第1课时口算除法习题课件(1)新人教版.ppt

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200,百,200,2,200,40,十,40,4,40,十,百,千,十,8,80,800,90,60,30,200,50,1803=60(个),1806=30(根),答:如果都买乒乓球,可以买60个; 如果都买跳绳,可以买30根。,鸭:60(2+1)=20(只),鸡:202=40(只),答:鸡有40只,鸭有20只.,

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