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Expressions and Formulae

Quick questions on Scientific notation: standard form and calculating with powers of ten - SQA National 5 Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Write 72 00072\,000 in scientific notation. [1 mark]
What is q2?
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Write 2.5×10−32.5 \times 10^{-3} as an ordinary number. [1 mark]
What is q3?
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Calculate (4×106)×(5×102)(4 \times 10^6) \times (5 \times 10^2) in scientific notation. [2 marks]

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