k=110xy\displaystyle k = \frac{1}{10}xyk=101xy
Work out the value of k k\,k when x=40x = 40x=40 and y=3y = 3y=3
Practise Edexcel GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.