Вправи 301 - 400 » 337

72 : 8 + 9 = 9 + 9 = 18; 56 : 8 – 3 = 7 – 3 = 4; 28 + 64 : 8 = 28 + 8 = 36; 90 – 40 : 8 = 90 – 5 = 85.