An ElectronicIntifada email I got  mentioned a UN estimate for just a single day in Gaza:
- …since 28 June, 175 Palestinians have been killed, including approximately 40 children and eight women, and over 620 injured in the Gaza Strip. One IDF soldier has been killed and 25 Israelis have been injured, including 11 Israelis injured by homemade rockets fired from the Gaza Strip. Palestinians have fired on average between 8-9 homemade rockets per day towards Israel (319 in total) and the Israeli military has fired on average 200-250 artillery shells per day into the Gaza Strip and conducted at least 220 aerial bombings. – “Statement on Gaza by United Nations Humanitarian Agencies working in the occupied Palestinian territory”  
Note the small differences between the statements by the WFP (over 620 injured) and UNICEF (over 600 injured).
Tags: Israel Palestine