The diameter of Neptune is 5.0 × 104 km
The diameter of Mars is 6.8 × 103 km
Calculate the difference between the diameter of Neptune and the diameter of Mars.
Give your answer in standard form.
Practise Edexcel IGCSE Maths Standard Form with exam-style questions for IGCSE Maths. 23 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 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.