(70 + 30) + 60 = 100 + 60 = 160
(200 + 200) + (360 - 80) = 400 + 280 = 680
(192 - 6) + 250 = 186 + 250 = 436
1000 - (500 + 120) = 1000 - 620 = 380
900 - (600 - 300) = 900 - 300 = 600
(450 + 90) - 100 = 540 - 100 = 440
(70 + 30) + 60 = 100 + 60 = 160
(200 + 200) + (360 - 80) = 400 + 280 = 680
(192 - 6) + 250 = 186 + 250 = 436
1000 - (500 + 120) = 1000 - 620 = 380
900 - (600 - 300) = 900 - 300 = 600
(450 + 90) - 100 = 540 - 100 = 440