Mathematics 4024 · O Level · Standard form

Standard form — practice question

(a)[1]

Arrange these numbers from the smallest to the largest: $2000$, $0.002$, $2\times10^{-4}$, $2\times10^{-2}$.

(b)[2]

Here standard form is used in a calculation: $a\times10^{-7}\div5\times10^b=4\times10^{-16}$. Determine the values of $a$ and $b$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Any expression equivalent to $2\times10^{-4}$” …