The deaths were latest in a protracted surge in bloodshed that has seen 3,500 people killed already this year.
Four people died in roadside bombing in a market area of the predominantly Sunni Arab town of Tarmiyah, north of Baghdad, officials said.
Another blast, in Latifiyah, south of the capital, killed a soldier.
Yesterday, four people died in shelling of the militant-held city of Fallujah, a short drive west of Baghdad, where troops have gone on the offensive in recent days without making much apparent headway.
Prime Minister Nuri al-Maliki is bidding for a third term but opponents blame him for the deterioration in security as well as what they say is rampant corruption and insufficient improvement in basic services.
