S&P 500 stock index futures pared gains on Friday after the government said the U.S. economy grew at a slightly slower-than-expected pace in the first quarter.

S&P 500 futures were flat and in line with fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures rose 13 points, while Nasdaq 100 futures added 4 points.

(Reporting by Angela Moon; editing by Jeffrey Benkoe)