Номер 257

1) (238 – 149) + 506 = 89 + 506 = 595;

2) (48 + 16) : (48 – 16) = 64 : 32 = 2;

3) (124 + 126) · (313 – 307) = 250 · 6 = 1500;

4) (32 x 15) – (896 : 28) = 480 – 32 = 448.