This is a set of five handouts (with keys) that give students an opportunity to grasp the concept of how .25 = 25% = 1/4 and .50 = 50% = 1/2. Students will mentally divide numbers in half and in quarters to arrive at solutions. Conversely, students will mentally multiply numbers by two and by four to arrive at other solutions. One key concept covered is the understanding of how to arrive at 50% (i.e. half) of an odd number.