iramazurk

Ответ:

Пошаговое объяснение:

А)

1000 - (305 * 3) = 1000 - 915 = 85

(550 * 4) - 1100 = 2200 - 1100 = 1100

(250 * 40) - 5400 = 10000 - 5400 = 4600

25000 - (25 * 10) = 25000 - 250 = 24750

Б)

80000 + (6000 : 5) = 80000 + 1200 = 81200

(450 * 4) + (440 * 4) = 1800 + 1760 = 3560

(4450 + 3550) + (55 * 30) = 8000 + 1650 = 9650

5600 + (4500 : 5) = 5600 + 900 = 6500