【正文】
10 20 30 40 50 60 70 80 90 100 = = 12 87 0 10 20 30 40 50 60 70 80 90 100 a b c d e f h g i a = b = c = d = e = f = g = h = i = 16 25 32 48 57 64 77 82 98 寫(xiě)出數(shù)射線上的數(shù): 0 10 20 30 40 50 60 70 80 90 100 23 25 39 35 73 78 左 右 在數(shù)射線上比大小 23 25 39 35 73 78