Based on @just_maths post on "Keeping Time" http://justmaths.co.uk/2015/10/18/keeping-time/
I printed the first slide onto A3 paper, which contains visual prompts (numbers can sometimes be difficult to read from the board). Some topics also contain extension questions and some questions can be completed without the question displayed on the board (for example perimeter of a sector and surface area of hemisphere) which can mean stronger students can move onto these questions when they are finished with the section you are currently on.
We went through each question as soon as the time was up, but may be quicker to do all the questions first. I am yet to complete 12 questions in 1 hour as planned :).