Summary: Excellent fraction capability. Very user friendly. Drawbacks are that the memory is reset each time the ON button is hit, so it loses all previous calculations each time it shuts off. CASIO calculators also have a logic fault. They will give inaccurate answers to problems like (4)(4) divided (4)(4). Sorry I don't know how to put a divided symbol into this text. The correct answer is 16; the CASIO will give an answer of 1.