2022 SQA Nat 5 Mathematics Paper 2: numbers 11 & 12

11. Calculate the length of the space diagonal in a cuboid. 12. Simplify a fraction involving algebraic expressions. Instructional exercise consisting of questions 11 and 12 from the second paper of the 2022 SQA National 5 Mathematics examination. Where appropriate the alternative methods for solving the problem are also given. Set out in stages of 'try then check' the worked solution to each part of the question. Including indications of where each mark is allocated, and the requirements for that mark, according to the marking scheme.