N.C. State built a 14-point halftime lead as Johnson, who made 10 of her 16 shots, had 13 of her points before the break. Washington State (4-1) hung around for most of the third and only trailed 39-28 before the Wolfpack closed the period by scoring the final 10 points.
Elissa Cunane had half the points during the closing burst and finished with nine points and 10 rebounds.
It didn't get better in the fourth quarter for Washington State as N.C. State scored the first 11 points and Washington State didn't score until 3:25 was left in the game.