(Reuters) – U.S. retailer Walmart Inc on Thursday reported an estimate-beating jump in first-quarter U.S. comparable sales, but overall revenue growth and online sales slowed. Sales at U.S. stores open at least a year rose 3.4 percent, excluding fuel, in the quarter ended April 30. Analysts estimated growth of 3.1 percent, according to IBES data from Refinitiv. Adjusted earnings per share increased to $1.13 per share, beating expectations of $1.02 per share. Online sales rose 37 percent, compared with the previous quarter’s 43 percent increase. Total revenue was up 1 percent at $123.9 billion but lower than analysts’ estimates of $125.03 billion.