John Walden, chief executive of Home Retail Group, said HRG had done well after the "distraction" of the £340m sale of 265-store DIY/garden centre chain Homebase to Australian group Wesfarmers, which is rebranding the centres as Bunnings.
Sales were £868m, up 0.1 per cent like-for-like.
Walden said: "I am pleased with our performance in the first quarter. Argos delivered good total sales growth together with positive like-for-like growth, representing its strongest sales growth performance in eight quarters. This was achieved against the challenging backdrop of constrained seasonal product sales due to poor weather, on top of a deflationary pricing environment.
"Finally, we remain on track to complete the proposed transaction with Sainsbury's in thep third quarter of this calendar year. Given the natural distraction that a transaction such as this can be for our colleagues, on top of the recent sale of Homebase, I am particularly pleased with our performance in the quarter."