小学班主任期末简短评语（小学班主任期末评语集锦优美）

2/7 = (2×5)/(7×5) = 4/35
3/10 = (3×3)/(10×3) = 9/30
6/9 = (6×7)/(9×7) = 42/63
8/18 = (8÷2)/(18÷2) = 4/9
2/3 = (...