Listen and read the conversation between the policeman and the lady. L: Excuse me. Where’s the Post Office, please? P: T he Post Office? Go straight ahead.

1) x+(619 - 392) = 719 +320
   x + 227 = 1039
   x = 1039 - 227
   x = 812
2) 120 + 880 - x = 56 * 50
   1000 - x = 2800
   x = 1000 - 2800
   x = -1800
3) x* ( 94 - 78 ) = 893 + 707
   16x = 1600
     x = 100
4) 5 * 25 : x = 890 - 865
   125 : x = 25
   x = 125 : 25
   x = 5