Understanding the link between ratios and fractions is a valuable skill to practise. There are nine circles. 4 circles are orange and 5 circles are blue. Find the fraction of orange circles, the ...

The ratio of the number of yellow circles to the number of white circles is 1 : 4. For each yellow circle there are 4 white circles. The ratio 3 : 12 is equivalent to 1 : 4 because for each yellow ...

The golden ratio is an almost mythical number that you may have heard of in various areas of architecture or design. For example, many claim the ancient Greek Parthenon has numerous examples of the ...