It was tied at 70 after Michael Caffey's jumper for Long Beach with 4:07 to go. Nevels made a jumper, and then Smith made a pair of layups and Hawaii led by five with 2:48 left.
Long Beach managed just one more free throw the rest of the way, as it missed its last four shots and committed two turnovers and a pair of fouls.
Hawaii shot 57 percent in the first half to build a 47-41 lead at the break.
Caffey led Long Beach State with 27 points and David Samuels had 19.