One car bomb hit Baladiyat in eastern Baghdad, killing at least 13 people, security and medical officials said. A second struck Adhamiyah in the north, killing at least 5, and a third, in the central Karrada district, left at least 5more dead.The bombings also wounded more than 50 people.
Meanwhile, security forces fought IS on two fronts the strategic city of Ramadi, west of Baghdad, and near Tikrit.
Ramadi, the capital of Anbar province, is in a shrinking patch of territory where pro-government forces in the area still hold ground, and its loss would be a major blow for Baghdad.
Government forces launched an offensive Friday north of Tikrit, one of a string of mainly Sunni Arab towns north and west of Baghdad that the terrorists seized in June.
Bombings in and around Baghdad killed at least 26 people Thursday, while a suicide car bomb on Tuesday killed 28 people, among them an MP who was also a senior Shiite lawmaker.
Despite a string of car bombs in the Iraqi capital, the US military said Baghdad was not under "imminent threat" from the trrrorists.