Mathematics 4024 · O Level · Standard form

Standard form — practice question

(a)[1]

Express the number $0.00023$ in standard form.

(b)[2]

Find $8 \times 10^9 - 9 \times 10^8$. Present your answer in standard form.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The number is $2.3\times10^{-4}$.” …

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