Dot notation is used with recurring decimals. The dot above the number shows which numbers recur, for example \(0.5\dot{7}\) is equal to 0.5777777... and \(0.\dot{2}\dot{7}\) is equal to 0.27272727 ...
The very word fractions is enough to send a chill down a non-maths specialist's spine and it's safe to say the topic is fraught with misconceptions. Secondary school maths teacher Mel Muldowney points ...