Ответ:
Пошаговое объяснение:
(8+2)*50 = 10*50 = 500
4*(30-20) = 4*10 = 40
(8*2)*5 = 8*(2*5) = 8*10 = 80
(2*5)*7 = 10*7 = 70
(600+300):3 = 900:3 = 300
(2*32)*5 = (2*5)*32 = 10*32 = 320
(40-30)*5 = 10*5 = 50
20*(10+40) = 20*50 = 1000
(50+6):8 = 56:8 = 7