Write 0.000405 in standard form.
Write 5.12 × 104 as an ordinary number.
Practise Edexcel GCSE Maths Standard Form with exam-style questions for Foundation and Higher tier. 93 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.