CAIE IGCSE Mathematics Extended Finding a Percentage of a Quantity

Practise finding a stated percentage of money, populations, measurements or chart totals and interpreting the result in its original context.

Exam points

multiply the given quantity by percentage ÷ 100 to obtain the required part
identify the correct whole from a chart, ratio or written context before applying the percentage
retain the requested unit and round only when the question's context or accuracy requires it

The table shows information about some of the planets in the solar system.

Planet	Diameter (km)	Average distance from the Sun (km)
Earth	12800	$1.496\times10^8$
Mars	6800	$2.279\times10^8$
Jupiter	143000	$7.786\times10^8$
Saturn	120500	$1.434\times10^9$
Neptune	49500	$4.495\times10^9$

The planet Uranus has a diameter that is 35.8% of the diameter of Jupiter.

Calculate the diameter of Uranus.

51200 or 51190 or 51194
M1 for $\frac{35.8}{100}\times143000$
After 0 scored, SC1 for answer figs 512 or figs 5119 or figs 51194

All question bank results loaded