Fractions, decimals, percentages and ratioIB MYP Maths Extended: Mind map

Conversions

Ratio

Percentage change

Percentages and ratio

real-life number

%ratioratemultiplier

Repeated change

Reverse percentages

Real life

Exam questions on Fractions, decimals, percentages and ratio

In a survey at a school in Lagos, $\frac{7}{20}$ of the students walk to school and the rest travel by other means.
A total of $480$ students took part in the survey. Find how many of them do not walk to school.2 marks
A laptop has a price of $\$ 850$ before a sale.
The price of the laptop is $\$ 850 $before the sale. Find the overall percentage change from$ $850$ to the new price after the two changes. State whether it is an increase or a decrease.2 marks
A bicycle shop in Dubai sells a bicycle for AED $1440$ after a $20\%$ discount.
Find the original price of the bicycle.3 marks

See the full worksheet

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).