Вычисли значение выражений.(1250-1125)*3+125*100,1250+7500: 5+2530,(10500-7050): 10+75

(1250 - 1125) × 3 + 125 × 100 = 12875

① 1250 - 1125 = 125

② 125 × 3 = 375

③ 125 × 100 = 12500

④ 375 + 12500 = 12875

1250 + 7500 ÷ 5 + 2530 = 5280

① 7500 ÷ 5 = 1500

② 1250 + 1500 = 2750

③ 2750 + 2530 = 5280

(10500 - 7050) ÷ 10 + 75 = 420

① 10500 - 7050 = 3450

② 3450 ÷ 10 = 345

③ 345 + 75 = 420