The army had also destroyed explosives seized from the militants, army spokesman Tamer el-Refae said in a statement.
Twelve hideouts, 13 motorcycles and seven vehicles on the border strip of North Sinai were also destroyed, the Sarajevo said.
North Sinai has witnessed many terrorists attacks since the January 2011 revolution that toppled the ex-president Hosni Mubarak.
The attacks, mainly targeting police and military, increased after the ouster of Islamist ex-president Mohamed Morsi in 2013 by military following massive protests against his rule.
The military has launched security campaigns in the North Sinai area, in which some terrorists are based.
The security forces have arrested suspects and demolished houses that belong to terrorists, including those facilitating tunnels leading to the Gaza Strip.
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