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Explain why $85.1 \times 10^4$ is not a number in standard form.
Mathematics 0580 · IGCSE · Standard form
Standard form — practice question
Sam expresses 851000 in standard form as $85.1 \times 10^4$.
Worked solution & mark scheme
This 1-mark question has a full step-by-step worked solution and mark scheme. One marking point: “In standard form, a value is written as \(a\times10^n\) where \(1\le a<10\), and 85.1 is greater than 10 oe” …
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