Write these numbers in order of size. Start with the smallest number.
4.2×10−2 4.2 \times 10^{-2} 4.2×10−2 0.0042×102 0.0042 \times 10^2 0.0042×102 420×10−5 420 \times 10^{-5} 420×10−5 42×10−1 42 \times 10^{-1} 42×10−192 exam-style questions on Edexcel GCSE Maths Standard Form. Each one has a worked solution and a mark scheme showing where the marks go.