Save guides, add subjects and pick up where you left off with your BBC account. In every number, each place to the left is 10 times greater and each place to the right is 10 times smaller. The decimal ...

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 ...