Palestinian officials said that as of about midday on Friday, 263 Palestinians had been killed and more than 2,000 injured since Israel began its Protective Edge military operation on July 7.
At least twenty-eight Palestinians have been killed in Gaza by airstrikes and artillery fire since Israel launched a ground operation late Thursday, Ma'an news agency quoted medics as saying.
Ahmad Abdallah al-Behnsawi was killed by shelling in Beit Lahiya, medics said.
Three children were killed in a targeted shelling on a home in northern Gaza. The bodies of Ahmad Ismail Abu Musallam, 14, his sister Alaa, 13, and their brother Muhammad, 15, were taken to Kamal Adwan hospital.
The children were killed when a shell hit their bedroom.
Earlier, ambulance crews said nine people were killed in the shelling of a home east of Khan Younis. Their bodies were found under the rubble of a residential building.
Among those identified were Hammad Abdulkarim Hammad Abu Lihyeh, 23, Muhammad Abdulfattah Rashad Fayyad, 26, and Mahmoud Muhammad Fayyad, 25, from Khan Younis.
Relatives Bilal Mahmoud Radwan, 23, Munthir Radwan, 22, Ahmad Fawzi Radwan, 23, and Mahmoud Fawzi Radwan, 24, were also killed.
Amal Khader Ibrahim Dabbur, 40, Ismail Youssif Taha Qassem, 59, Nassim Mahmoud Nassir and Karam Mahmoud Nassir were killed in Beit Hanoun and at least 25 injured in heavy shelling.
In Rafah three people were killed and 11 others wounded by Israeli forces, who fired foul-smelling gas during the operation.
In the Gaza City neighborhood of Shujaiyeh, Rani Abu Tawileh was killed and 12 members of his family injured in heavy bombings.
The body of Hussam Abu Issa was pulled from rubble in central Gaza on Friday. It is believed he was killed in overnight attacks.