Write 3.5 × 10-1 as an ordinary number.
Work out the value of (2.5×103)×(2×104)(2.5 \times 10^3) \times (2 \times 10^4)(2.5×103)×(2×104) Give your answer in standard form.
261 exam-style questions on OCR GCSE Maths Standard Form. Each one has a worked solution and a mark scheme showing where the marks go.