Блок 1 задание номер 5
A) 549 - (125 + 175) = 549 - 300 = 249 б) 4253 + (3978 - 2978) = 4253 - 1000 = 3253 в) 45 * 25 * 4 * 2 = 45 * 2 * (25 * 4) = 90*100 = 9000 г) 36 * 27 + 36 * 23 - 26 * 40 = 36 * (27 + 23 - 40) = 36 * (50 - 40) = 36 * 10 = 360