Mathematics 4024 · O Level · Standard form

Standard form — practice question

The table gives the populations of some African countries in $2014$, rounded to $2$ significant figures.

(a)[2]

In $2014$, Nigeria had a population of $177156000$. Fill in the table with Nigeria's population in standard form, correct to $2$ significant figures.

(b)[1]

Complete the statement below. The population of Chad was ............ times the population of Namibia.

(c)[2]

The area of Sudan is $1.86 \times 10^{6}$ square kilometres. Estimate Sudan's population density. Give your answer correct to $1$ significant figure.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$1.8 \times 10^8$” …