You're dealing with a phase change, so you need to determine how much heat you need to supply to the ice to get to go from solid at
The equation you'll use looks like this
The enthalpy of fusion for ice has a value of 334 J/g. This means that, if you have 1 gram of ice at
Since you've got more than one gram of ice, you'll of course need more than 334 J of heat.
Expressed in kJ and rounded to three sig figs, the answer will be
The + sign symbolizes that the heat is provided to the ice.