Class 2 of the fifth grade prepared 12 programs, and finally 6 programs were selected to participate in the school performance. What percentage of the programs participated in the performances accounted for all the programs prepared by the class?
五年级2班准备了12个节目，最后有6个节目被选中参加学校表演，参加表演的节目占该班所有准备节目的几分之几？
<gadget id="calculator">6 / 12</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>