Tesco said: "As a result of this, in combination with the strength and relevance of our overall proposition, we saw net switching gains to Tesco from Aldi for the first time in over a decade."
Tesco will extend the price match to further products as it looks to win back market share from the budget grocers.
However results were less impressive at Tesco Bank and the company expects to post a loss this year of between £175 million and £200 million.
Tesco sales have soared during lockdown
Jeremy Selwyn
The company said: "We have increased our provision for potential bad debts at Tesco Bank. We will continue to review any changes made to macro-economic forecasts and this could result in releases from or additions to this provision. Whilst headline profitability is impacted in the short term, the Bank's capital ratios and liquidity remain strong."
Dave Lewis, chief executive, said: "Through a very challenging period for everyone, Tesco colleagues have gone above and beyond, and I'm extremely proud of what they've achieved.
"Their selfless efforts, combined with our embedded strategic advantages in stores and online, have helped to ensure that everyone can get the food they need in a safe environment.
"In just five weeks, we doubled our online capacity to help support our most vulnerable customers and transformed our stores with extensive social distancing measures so that everyone who was able to shop in store could do so safely."
