小學(xué)三年級(jí)數(shù)學(xué)奧數(shù)題試卷
奧數(shù)練習(xí)一按規(guī)律填數(shù).1 1,5,14,30,55, ,2 5,13,37,109, ,31,2,4,4,9,8, , ,25,32,41,4,5,4,9, , ,二用簡便方法計(jì)算下列各題1 70279929899 2 4009919829,
1、奧數(shù)練習(xí)一按規(guī)律填數(shù).1 1,5,14,30,55, ,2 5,13,37,109, ,31,2,4,4,9,8, , ,25,32,41,4,5,4,9, , ,二用簡便方法計(jì)算下列各題1 70279929899 2 4009919829。