Transcript 扩分
扩分 红色部分是全图的几分之几? 1 2 2 4 4 8 8 16 1 2 1 2 = = 8 16 1 8 28 = 8 16 蓝色部分是全图的几分之几? 1 3 2 6 4 12 8 24 1 3 1 3 = = 1 8 3 8 8 24 = 8 24 绿色部分是全图的几分之几? 2 5 4 10 8 20 2 5 2 5 = = 2 4 5 4 8 20 = 8 20 绿色部分是全图的几分之几? 2 5 6 15 12 30 2 5 2 5 = = 12 30 2 6 5 6 = 12 30 1 2 = 1 3 23 = 3 6 2 3 = 23 3 3 = 6 9 3 4 = 3 2 4 2 = 6 8 3 4 3 4 = 3 ? 4? = 3 10 4 10 = 30 40 = 30 40 3 5 2 9 4 11 = ? 25 ? 15 = 12 ? ? 54 = 16 ? ? 44 3 8 4 7 12 19 = ? 40 ? 15 = 24 ? ? 42 = 36 ? ? 57