Решить примеры по действиям: 15*10 + (30-20) * 5 = 15*10+30-20*5 = (120+320/4) * 2 = 120+320 / (4*2) =

1). 15 * 10 + (30 - 20) * 5 = 200;

15 * 10 = 150;

30 - 20 = 10;

10 * 5 = 50;

150 + 50 = 200;

2). 15 * 10 + 30 - 20 * 5 = 80;

15 * 10 = 150;

20 * 5 = 100;

150 + 30 = 180;

180 - 100 = 80;

3). (120 + 320 / 4) * 2 = 400;

320 : 4 = 80;

120 + 80 = 200;

200 * 2 = 400;

4). 120 + 320 / (4 * 2) = 160;

4 * 2 = 8;

320 : 8 = 40;

120 + 40 = 160.