найдите значение выражения, выбирая удобный порядок вычислений 1) (237+118)–37; 2) (439+526)–326; 3) 729–(513+129); 4) 637–(337+256).

1     237-37+118=318

2    526-326+439=639

3    729-129+513=1113

4    637-337+256=556

1) (237 + 118) - 37 = 237 - 37 + 118 = 200 + 118 = 318;

2) (439 + 526) - 326 = 526 - 326 + 439 = 200 + 439 = 639;

3) 729 - (513 + 129) = 729 - 129 - 513 = 600 - 513 = 87;

4) 637 - (337 + 256) = 637 - 337 - 256 = 300 - 256 = 44;

5) (148 + 245) - 45 = 245 - 45 + 148 = 200 + 148 = 348;

6) (473 + 132) - 173 = 473 - 173 + 132 = 300 + 132 = 432;

7) 843 - (154 + 243) = 843 - 243 - 154 = 600 - 154 = 446;

8) 894 - (394 + 148) = 894 - 394 - 148 = 500 - 148 = 352.