As the death toll mounted, the US and the UN appealed to both sides to end the hostilities that has claimed the live civilians, including children.
US Secretary of State John Kerry and UN chief Ban Ki-moon are in Egypt to try to arrange a ceasefire.
The Israel Defence Forces (IDF) struck some 190 terrorist targets over the past 24 hours in the Gaza Strip, including over 100 in Shejaia.
Several mosques, a stadium and a hospital were destroyed in today's strikes.
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Israel launched its ground operation in Gaza after days of air strikes, following rocket fire by militants into Israeli towns.
Israel said the move was necessary to target Hamas' network of tunnels, which have been used by militants to get into Israel and carry out attacks.
"First of all, it won't happen before we really finish the tunnels project which was laid out as a strategic objective," Livni said.
The IDF said it had targeted a cache of anti-tank missiles in the hospital's "immediate vicinity".
Over 30 members of two Palestinian families also died in Israeli strikes overnight, Gazan health officials said.
The IDF today announced that nine soldiers were killed yesterday, raising the number of Israeli military fatalities since the operation commenced to 27. Two Israeli civilians have also been killed.
One of the IDF soldiers classified as "missing" in Gaza was declared dead. However his body is still missing.
It was unclear how many of the dead were militants, but the United Nations has estimated that between 70-80 per cent were civilians, including at least 120 children. Israel said that its forces have killed more than 180 militants.