A pencil has length, $l$ cm, which is 18 cm when rounded to the nearest centimetre.
(a)[2]
Fill in the statement for the value of $l$.
(b(i))[1]
Express $9.314 \times 10^5$ as an ordinary number.
(b(ii))[2]
Calculate $(4.1 \times 10^{-3}) \times (8.9 \times 10^7)$. State your answer in standard form.
(c)[1]
Calculate the value of $\sqrt{(8 + 4 \times 75^{0.6})}$.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “They are $17.5$ and $18.5$.” …
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