Theresa May called out Labour leader Jeremy Corbyn for confusing the Institute of Fiscal Studies (IFS) with the International Monetary Fund (IMF) during Prime Minister's Questions.
When asked about the government's economic plan set out by her predecessor, the PM said: "The IMF says that this will be the fastest growing advanced economy in the world."
Corbyn replied: "Since she quotes the Institute of Fiscal Studies, I think she's being a little bit selective."
May responded: "I think given that he can't differentiate between the IMF and the IFS, it's probably a good job he's sitting there and I'm standing here."
Prime Minister's Questions should be moved to a slot during TV's evening prime time and Speaker John Bercow should be given the power to "sin bin" misbehaving MPs for the duration of the session, a think tank has recommended.
The Hansard Society recommended sweeping reforms to David Cameron's weekly appearance before MPs, including questions from the public and sessions being moved to a prime-time slot on Tuesday or Wednesday evening in a bid to attract a younger audience.
The report's co-author Dr Ruth Fox, head of research at the Hansard Society, said: 'PMQs is a cue for the public's wider perceptions of Parliament. It provides a lot of the raw material that feeds their negative assumptions about politicians.
"The public think the conduct of MPs is childish and wouldn't be tolerated in other work places. "They think politicians are simply not taking the issues that affect their lives seriously enough...
"Reform is overdue if PMQs is to move from being an inward-looking and self-referential event towards its proper role of scrutiny and accountability."
Labour MP Tom Watson asked Jeremy Hunt whether he expects the House of Commons to believe that "these incriminating emails and texts are all the work of a single rogue adviser".
Mr Hunt responded that it is too early to make any accusations of wrongdoing because the Leveson Inquiry has not finished hearing evidence or reached any conclusions.
The Culture Secretary Jeremy Hunt is responding to the Shadow Culture Secretary Harriet Harman's accusation that he backed News Corporation's bid to take over BSkyB when he should have been neutral.
He said that he had "expressed some sympathy for the bid" before he was responsible for it, and that for this reason he sought advice from independent regulators at every stage of the bidding process. He said:
Jeremy Hunt has said that he regrets the resignation of his special adviser Adam Smith in the wake of email revelations that appear to show inappropriate communications between Mr Hunt's department and News Corporation.
He said that he believed the communications were limited to "advice on process".
The Culture Secretary Jeremy Hunt said that he is aware of the impression that there was a back channel for communications between himself and News Corporation during the latter's bid for BSkyB. Mr Hunt said this was "categorically not the case".
He said, however, that the "tone and volume" of communications between News Corp and his aides was "not appropriate".
Culture Secretary Jeremy Hunt says he intends to "reply fully" to the allegations that emerged from the Leveson Inquiry in due course, but said he intended to "set the record straight on a number of issues" today.
The Labour Leader Ed Miliband said that a "shadow of sleaze" still hangs over the Government. Speaking at Prime Minister's Questions, he listed Andy Coulson, Rebekah Brooks and Jeremy Hunt as examples of David Cameron "putting his cronies before the interests of the country",
The Prime Minister has said that he has "full confidence" in the Culture Secretary Jeremy Hunt.
Mr Hunt will give a statement after Prime Minister's Questions.