Частина 2. Номер 181

500 – 80 = 420;

400 – 20 = 380;

620 + 80 = 700;

480 + 20 = 500;

360 – 120 = 240;

480 – 210 = 270;

540 + 310 = 850;

630 + 160 = 790.