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例1: 百数表,(1)按照数的顺序,在空格里填数。,2,3,11,13,21,22,14,7,9,15,8,6,5,4,16,27,29,30,17,20,18,24,25,26,50,40,39,38,33,32,31,60,59,70,80,90,69,49,79,99,46,48,58,68,88,98,87,77,56,76,86,96,97,42,41,51,61,71,81,43,52,62,72,92,45,53,63,83,93,55,84,74,75,85,95,94,(2)涂一涂,画一画。,把个位是5的数涂成黄色。,把个位是6的数涂成蓝色。,把十位和个位上相同的两位数圈起来。,(3)上表中,从( )到( )是一位数,从( )到( )是两位数,100是( )位数。,(4)观察上表,你还有哪些发现?,每个竖排的末尾数字相同,每行数字的首个数字相同。,9,1,10,99,三,(5)根据上表的百位数,在 里填数。,35,66,57,77,66,65,64,53,52,68,46,45,98,88,99,90,80,79,36,54,67,78,89,100,