Opener Ahmed Shehzad (93) missed out on a hundred but Pakistan punished the UAE bowlers by putting on board a huge total of 339 for six, which was way beyond their rivals.
UAE managed 210 for eight but did well to bat for full 50 overs with Shamimam Anwar scoring 62, his third One-day half-century. Others to contribute were Khurram Khan (43) and Amjad Javed (40).
With this win, Pakistan have jumped to fourth in the points table from sixth spot.
Pakistan's huge score came against a not-so-impressive attack but their batsmen got some much-needed runs under the belt as the race to quarterfinals picks up pace.
After being invited to bat, Pakistan lost opener Nasir Jamshed (4) but Shehzad and Haris Sohail, who scored 70 runs, shared a huge 170-run stand for the second wicket to lay the foundation of a big score.
Mohammed Naveed broke the stand by having Sohail caught by Shaiman Anwar. Shehzad then missed the milestone of a World Cup hundred as he was run out as Pakistan lost two quick wickets.