Differentiated three ways, this KS1 Reasoning What is the Fraction? Test Practice is based on a question from the 2017 SATs reasoning paper, where the aim is to find the missing fraction. The most challenging of the three worksheets focuses on the skill of identifying 1/2, 1/4, 2/4, 3/4, 1/3 or 2/3 of an amount using a visual representation. The most accessible uses 1/2 and 1/4 in its questions. There are 12 questions for each sheet and an answer sheet provided to save some time.