283. 200:2.(540+460): 10 2002.540+460:10 200:2.(540+460:10) Вычисли. 2072:518

283. 1. $$200 : 2 \cdot (540 + 460) : 10 = 100 \cdot 1000 : 10 = 100000 : 10 = 10000$$ 2. $$200 : 2 \cdot 540 + 460 : 10 = 100 \cdot 540 + 46 = 54000 + 46 = 54046$$ 3. $$200 : 2 \cdot (540 + 460 : 10) = 100 \cdot (540 + 46) = 100 \cdot 586 = 58600$$ Вычисли: $$2072 : 518 = 4$$